AnandTech Ivy Bridge Performance Preview

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MrK6

Diamond Member
Aug 9, 2004
4,458
4
81
Just read the preview, excellent write up guys! I like that you included Skyrim in the games, very helpful to a lot of folks :thumbsup:.
 

Edrick

Golden Member
Feb 18, 2010
1,939
230
106
I was talking Haswell.

There is no proof about anything Haswell yet (other than the new instructions), just speculation based on Intel marketing trends up until now.

So there "might" be a 6C/8C desktop part, or even a 4C/8T i5, but I would say that is less than 5% chance of happening.
 

Edrick

Golden Member
Feb 18, 2010
1,939
230
106
That's really so sad. Intel introduced desktop quad-core CPUs at 65nm in 2007. Surely, by 22nm and 2012, it might be possible to squeeze another couple of cores in, don't you think?

Why would they? There is no need to do so yet. Software has not caught up to the "more cores" race of the last decade. I would say that 90% of PC users can live with 4 cores. And if you add HT to that, then all the better.

Then the remaining 10% of users could spend a little more and get the SB-E line with 6 cores.

I really don't see why people keep crying about "mainstream" not moving past 4 cores quickly. There are othe options.
 

Rvenger

Elite Member <br> Super Moderator <br> Video Cards
Apr 6, 2004
6,283
5
81
There is no proof about anything Haswell yet (other than the new instructions), just speculation based on Intel marketing trends up until now.

So there "might" be a 6C/8C desktop part, or even a 4C/8T i5, but I would say that is less than 5% chance of happening.


Ahh, that 5% chance will become greater if AMD would get their arses in gear and produce something competitive!
 

dma0991

Platinum Member
Mar 17, 2011
2,723
1
0
I was talking Haswell.
Intel is pretty rigid with how they market their products. AFAIK, i3 = 2C4T, i5 4C4T and i7 4C8T and beyond. That is referring to the desktop parts which are quite consistent with what I said but the mobile parts are a little bit confusing at times because we could have an i5 part with 2C4T and the same can be said for the i7 mobile.

From what I could tell about Haswell, we are still at 4 cores maximum for the mainstream and Intel is focusing on integrating more parts into their chip while improving their IGP even further. With the similar core count, I could probably assume that there might not be a 4C8T part for Haswell i5.
 

blckgrffn

Diamond Member
May 1, 2003
9,294
3,436
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www.teamjuchems.com
Why would they? There is no need to do so yet. Software has not caught up to the "more cores" race of the last decade. I would say that 90% of PC users can live with 4 cores. And if you add HT to that, then all the better.

Then the remaining 10% of users could spend a little more and get the SB-E line with 6 cores.

I really don't see why people keep crying about "mainstream" not moving past 4 cores quickly. There are othe options.

Because I want them. Because what I do with my computers will use every thread they have without issue. Because these things need to be "mainstream" so they can be a cheap bundle @ microcenter.

Because I want my cake and I want to devour it too.

Here's to hoping that PD & Steamroller are worth a crap...
 

pelov

Diamond Member
Dec 6, 2011
3,510
6
0
Why would they? There is no need to do so yet. Software has not caught up to the "more cores" race of the last decade. I would say that 90% of PC users can live with 4 cores. And if you add HT to that, then all the better.

Then the remaining 10% of users could spend a little more and get the SB-E line with 6 cores.

I really don't see why people keep crying about "mainstream" not moving past 4 cores quickly. There are othe options.

There are diminishing returns in both IPC and frequency when you're adding cores, so doing it correctly without hampering the individual core performance seems to be the intended goal, whether it's SMT or CMT -- Intel and AMD respectively. One of these methods currently works far better than the other one I guess that in itself brings some validity to your statement (10-30% compared to 80%?)

I know some people were expecting a bit more from Ivy, but considering the tick tock model, I'm rather happy with its perf-per-watt; which I think was the main goal in the first place (along with the HD4000, which I'm still iffy on).

Mobile mobile mobile!

Here's to hoping that PD & Steamroller are worth a crap...

Indeed. I have high hopes for Trinity in the cost-to-performance and graphical performance. I just hope GloFo can make enough of them
 
Mar 10, 2006
11,715
2,012
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Because I want them. Because what I do with my computers will use every thread they have without issue. Because these things need to be "mainstream" so they can be a cheap bundle @ microcenter.

Because I want my cake and I want to devour it too.

Here's to hoping that PD & Steamroller are worth a crap...

For the mainstream, the focus is on lower TDPs, more integration, and higher IPC. For high end, you get more brute cores.
 

fixbsod

Senior member
Jan 25, 2012
415
0
0
I'm glad intel is focusing on making better chips and not just MOARRR CORESS. More cores is akin to the GHz race in the late 90s/early 2000s. It's not just the quantity of cores but the QUALITY. So yes, the future definitely will be more cores, but lets keep improving those cores instead of just adding more. BD has how many cores and yet can't even deal with a 4c/4t i5-2500k ??
 

blckgrffn

Diamond Member
May 1, 2003
9,294
3,436
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www.teamjuchems.com
I'm glad intel is focusing on making better chips and not just MOARRR CORESS. More cores is akin to the GHz race in the late 90s/early 2000s. It's not just the quantity of cores but the QUALITY. So yes, the future definitely will be more cores, but lets keep improving those cores instead of just adding more. BD has how many cores and yet can't even deal with a 4c/4t i5-2500k ??

I am going to put forth that is only due to Intel's epic lead in manufacturing/process node maturity.

Given completely equal footing in that regard, I am "sure" BD would be very competitive. For what I do it is competitive on a performance level, but power consumption is utterly unreasonable.

So yeah, Intel, make me an eight core CMT on 22nm or something SUDO MOAR COARS!

I just want more without paying a premium. What I want isn't wrong - it's just that Intel isn't under much pressure to deliver.

For the mainstream, the focus is on lower TDPs, more integration, and higher IPC. For high end, you get more brute cores.

I don't have to like the truth to accept it. I'll just continue to be disappointed in this development.

Trinity could be pretty interesting - 35W desktop parts with full GPU would be very tasty indeed.
 
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LOL_Wut_Axel

Diamond Member
Mar 26, 2011
4,310
8
81
Because I want them. Because what I do with my computers will use every thread they have without issue. Because these things need to be "mainstream" so they can be a cheap bundle @ microcenter.

Because I want my cake and I want to devour it too.

Here's to hoping that PD & Steamroller are worth a crap...

What's your point? AMD's cores are so weak and slow that it doesn't matter if they have more of them.

You have Intel, which has the Core i7 with four cores and SMT. You have AMD, which has eight integer cores and four floating point cores in a CMT architecture.

To set the baseline, one AMD core is 1.0x. In comparison, one Intel core is 1.5-1.6x. On top of that, when you stress the processor completely, resources need to be shared on the AMD core. That means each AMD core goes to being 0.8-0.9x, while Intel with SMT is able to improve performance by .2x, or 20%.

No wonder Intel is faster even in multi-threaded even with half the number of cores.
 

blckgrffn

Diamond Member
May 1, 2003
9,294
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www.teamjuchems.com
What's your point? AMD's cores are so weak and slow that it doesn't matter if they have more of them.

You have Intel, which has the Core i7 with four cores and SMT. You have AMD, which has eight integer cores and four floating point cores in a CMT architecture.

To set the baseline, one AMD core is 1.0x. In comparison, one Intel core is 1.5-1.6x. On top of that, when you stress the processor completely, resources need to be shared on the AMD core. That means each AMD core goes to being 0.8-0.9x, while Intel with SMT is able to improve performance by .2x, or 20%.

No wonder Intel is faster even in multi-threaded even with half the number of cores.

Really? LOL_WUT indeed. I am saying that 4C w/HT from Intel is not enough after three or four years of that being a mainstream (not and Extreme Edition) part. WTF does AMD have to do with anything?

We aren't starting another whacked out digression with funky math you throw out there here. Your baselines are in your own freaking head. No, don't post anything here to attempt to back them up, I am not interested in discussing them with you, save it.
 
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pelov

Diamond Member
Dec 6, 2011
3,510
6
0
What's your point? AMD's cores are so weak and slow that it doesn't matter if they have more of them.

You have Intel, which has the Core i7 with four cores and SMT. You have AMD, which has eight integer cores and four floating point cores in a CMT architecture.

To set the baseline, one AMD core is 1.0x. In comparison, one Intel core is 1.5-1.6x. On top of that, when you stress the processor completely, resources need to be shared on the AMD core. That means each AMD core goes to being 0.8-0.9x, while Intel with SMT is able to improve performance by .2x, or 20%.

No wonder Intel is faster even in multi-threaded even with half the number of cores.

Yes, but he's also right in this statement that the fab advantage is quite huge and has played a big role.

I am going to put forth that is only due to Intel's epic lead in manufacturing/process node maturity.

Intel currently has an approximate 18 month lead time on its smaller rival when it comes to moving to new process technologies, while its gross margin is 16 percent higher. When it comes to research and development, the gap between the two companies is enormous. Intel spent $3.9B on R&D in Q2; AMD’s total revenue for the same period was $1.57B. What this means in the real world is that Intel can build more CPUs per silicon wafer than AMD can, earns more money per sale, and has a research fund that’s nearly 2.5x AMD’s quarterly income.

Historically, AMD has ignored these factors and designed cores that were meant to go toe-to-toe with Intel’s best in terms of single-threaded performance. This has proven to be an ineffective strategy *. AMD has never been able to retain any performance crown it took from Intel, and the cost of attempting to do so nearly killed the company. Bulldozer breaks with these trends. It’s explicitly designed to lower AMD’s manufacturing costs, play to the company’s strengths, and help it achieve competitive parity with Intel over the long term. Doing so necessitated some short-term tradeoffs, but they’ve been made in an intelligent manner. The result is an x86 processor that’s different from anything we’ve seen from either AMD or Intel before.

http://www.extremetech.com/computing/93046-the-dao-of-dozer-understanding-amds-next-gen-cpu

This doesn't justify the poor perf-per-watt figures or the decrease in IPC, but they were definitely right in assuming they'd never catch Intel in terms of single-threaded performance. There are some issues with Bulldozer that point directly to the design, though, so pointing to a fab advantage as being the only culprit wouldn't be the whole truth. The Intel fabs are the reason why AMD had to make a radical shift in their approach. But this isn't a Bulldozer thread...

Haswell looks like it will shoot back up to 95W for the desktop parts, so here's to hoping that it's mostly due to the CPU performance as opposed to more graphics. Unfortunately this link makes me think otherwise :\
 

LOL_Wut_Axel

Diamond Member
Mar 26, 2011
4,310
8
81
Really? LOL_WUT indeed. I am saying that 4C w/HT from Intel is not enough after three or four years of that being a mainstream (not and Extreme Edition) part. WTF does AMD have to do with anything?

We aren't starting another whacked out digression with funky math you throw out there here. Your baselines are in your own freaking head. No, don't post anything here to attempt to back them up, I am not interested in discussing them with you, save it.

Says who?

And the math is easily available, and AMD comes into the picture because you brought it up and insinuated that AMD's approach would be better in the long run. Sandy Bridge has 50% higher IPC than Bulldozer, and when you use resources on both cores on an AMD module, per-core performance goes down another 10-20%.

You don't need more cores when with a small architectural revision ("tick", i.e. Sandy Bridge to Ivy Bridge) enables you to get 5% higher IPC and a major architectural revision ("tock", or Westmere to SB) gives you 10-15% higher IPC on top of that. In the end, you're getting 15-20% more performance at the same clocks every two years, which is nothing to be whining about.

Simply adding more cores while not improving the performance of each one makes for lazy, craptastic engineering, which is what AMD achieved with Bulldozer.
 

Remobz

Platinum Member
Jun 9, 2005
2,564
37
91
Tocks are never as exciting as ticks I think most would agree. A die shrink, some new features, better thermals and overclocking. Pretty cool but not that much of a thrill. But a tick brings pages and pages of new architectural improvements with lots of cool diagrams and hours of reading to try and figure it all out (for me anyway) before you see the actual IPC improvements in various applications in the benchmarks. We're always looking for the next release to be as dramatic a performance improvement as we witnessed in going from P4 to Conroe. That was nearly a doubling of performance per clock. It spoiled us.

All that said I'm grabbing one of these as soon as I can.

The price will be much more expensive than a regular 2500k or 2600k though
 

blckgrffn

Diamond Member
May 1, 2003
9,294
3,436
136
www.teamjuchems.com
Says who?

And the math is easily available, and AMD comes into the picture because you brought it up and insinuated that AMD's approach would be better in the long run. Sandy Bridge has 50% higher IPC than Bulldozer, and when you use resources on both cores on an AMD module, per-core performance goes down another 10-20%.

You don't need more cores when with a small architectural revision ("tick", i.e. Sandy Bridge to Ivy Bridge) enables you to get 5% higher IPC and a major architectural revision ("tock", or Westmere to SB) gives you 10-15% higher IPC on top of that. In the end, you're getting 15-20% more performance at the same clocks every two years, which is nothing to be whining about.

Simply adding more cores while not improving the performance of each one makes for lazy, craptastic engineering, which is what AMD achieved with Bulldozer.

Says me? Intel has to get me to part with my $$$? It's the only vote I even have in the matter.

It's a good thing SB has that IPC lead, otherwise they would look silly. If it was the other way around, and Intel was pumping out 5Ghz Bulldozers @ 95W on a very mature process vs 2.7 ghz leaky Sandy Bridges from AMD the shoe would be on the completely other foot.

I should be happy with 15 to 20% every two years? Why? That is pathetic. Thuban gave me 50% more power over Deneb for the same Watts in ~2 years. Intel did the same with Core 2 Quad. Given the increasing density of the chips, that should the norm. According to me.

Chasing IPC is a fools errand at some point, you end up with what you were telling me I was supposed to be happy with, that's why we don't have uber-wide single core processors today. Scalling out is the other obvious choice to increasing performance.

To each their own, man, but I'll keep expecting more at this point. Those transistors that should be cores are being blown on IGP Until they offer compute capabilities. Then their wastage becomes more open to interpretation, IMHO.
 

LOL_Wut_Axel

Diamond Member
Mar 26, 2011
4,310
8
81
Says me? Intel has to get me to part with my $$$? It's the only vote I even have in the matter.

It's a good thing SB has that IPC lead, otherwise they would look silly. If it was the other way around, and Intel was pumping out 5Ghz Bulldozers @ 95W on a very mature process vs 2.7 ghz leaky Sandy Bridges from AMD the shoe would be on the completely other foot.

I should be happy with 15 to 20% every two years? Why? That is pathetic. Thuban gave me 50% more power over Deneb for the same Watts in ~2 years. Intel did the same with Core 2 Quad. Given the increasing density of the chips, that should the norm. According to me.

Chasing IPC is a fools errand at some point, you end up with what you were telling me I was supposed to be happy with, that's why we don't have uber-wide single core processors today. Scalling out is the other obvious choice to increasing performance.

To each their own, man, but I'll keep expecting more at this point. Those transistors that should be cores are being blown on IGP Until they offer compute capabilities. Then their wastage becomes more open to interpretation, IMHO.

Intel wants to make low-end or lower-tier mid-range graphics cards obsolete, that's why.

The only place where you got 50% more performance from Thuban compared to Deneb was extremely multi-threaded programs and you still got meh single-threaded performance. The secret to great desktop performance is extremely high single AND multi-threaded performance. You can buy one or the other for cheap, but for both you'll have to pay dearly. The 'cheapest' way to get that is an 1155 Core i7 because of low platform costs, but $320 for a processor is definitely not cheap unless you plan on having it for three+ years, which in my case I do.
 

SickBeast

Lifer
Jul 21, 2000
14,377
19
81
I think for laptops ivy bridge will be a nice upgrade because of the faster graphics and lower power consumption.
 
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