What does Zen need to be in order to get you to buy it?

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superstition

Platinum Member
Feb 2, 2008
2,219
221
101
You too use it as a heater I see?
Poor AMD... Always substandard. There's no way an FX processor can compete with a GTX 480 SLI system in terms of heating up a room.

Funny how so many people thought that system was good for bragging rights, especially paired with a max overclock 45nm chip.
 
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Rifter

Lifer
Oct 9, 1999
11,522
751
126
Poor AMD... Always substandard. There's no way an FX processor can compete with a GTX 480 SLI system in terms of heating up a room.

Funny how so many people thought that system was good for bragging rights, especially paired with a max overclock 45nm chip.

I know my i7 930@4.2GHz and OC'ed SLI GTX 460's made great space heaters in the winter, would make a noticeable difference in room temp for sure. Not so great in the summer though lol.
 
Reactions: superstition

Bluescreendeath

Junior Member
Sep 21, 2016
7
0
6
At least Haswell-level IPC performance with 8 core Zen priced at the level of a 4 core Haswell/Skylake (i7/i5), and 4 core Zen priced at the level of the 2 cores Haswell/Skylakes (i3s).
 

guachi

Senior member
Nov 16, 2010
761
415
136
Zen would need to be 100% faster in CPU heavy tests over my current chip to get me to consider switching.

My current CPU is an 8350 and I won't be upset if a consumer/enthusiast Zen isn't 100% faster. The 8350 suffices for my needs as it is.

If I didn't have to get a new motherboard, my requirements would be lower.
 

Yuriman

Diamond Member
Jun 25, 2004
5,530
141
106
I already answered once here, but I'd like to revise my thoughts a bit.

Zen will be attractive to me only if single-threaded performance matches or improves upon what Intel has at a similar price, which I really don't expect to happen.

Food for thought though, if AMD can get ~Broadwell level IPC, similar performance per watt, similar clockspeeds, can get their die size down by shedding some things like iGPU and the transistors related to AVX2, and is happy with lower margins, I would totally buy a Zen quad for much less than a Skylake quad. If they can build a quad core that's half the size of Skylake (which shouldn't be too hard, given how much of SL is iGPU) and sell it for 50-75% the price, AMD can have my money.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
I already answered once here, but I'd like to revise my thoughts a bit.

Zen will be attractive to me only if single-threaded performance matches or improves upon what Intel has at a similar price, which I really don't expect to happen.

So if they will offer Ivy/Haswell IPC with 50% more Cores/Threads at the same price you will go for Higher IPC and less cores/Treads in 2017 and DX-12/Vulkan era ????

Food for thought though, if AMD can get ~Broadwell level IPC, similar performance per watt, similar clockspeeds, can get their die size down by shedding some things like iGPU and the transistors related to AVX2, and is happy with lower margins, I would totally buy a Zen quad for much less than a Skylake quad. If they can build a quad core that's half the size of Skylake (which shouldn't be too hard, given how much of SL is iGPU) and sell it for 50-75% the price, AMD can have my money.

There is only a single ZEN die and that is 8 Cores 16 Threads, the quads will use the same die.
I really dont know if even the lowest Core count (Quad) ZEN SKU will be priced bellow what Intel sell its Core i5.
 

Yuriman

Diamond Member
Jun 25, 2004
5,530
141
106
I would hope it would be. If a Zen quad is no cheaper than an i5, with less IPC, performance per watt and clockspeed and lacking Intel's iGPU and specialized instructions, I can't see a single attractive thing about it.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
I would hope it would be. If a Zen quad is no cheaper than an i5, with less IPC, performance per watt and clockspeed and lacking Intel's iGPU and specialized instructions, I can't see a single attractive thing about it.

True, what if it is a Quad + HT at the same price as Core i5 ???
 

zinfamous

No Lifer
Jul 12, 2006
110,810
29,564
146
I've been happy with my un-OC'able Xeon v3 1231 3.4ghz.

I don't know what to expect of Zen that would perform much better than this to "require" replacing that CPU/Mobo as from what I understand, performance in this realm has been completely stagnant for several years now and Zen, from the consumer perspective, is targeted at that same level. I always thought Zen was targeted to compete with data centers/servers/workstations and such.

My next upgrade will be an RX 490/490x/480x, depending on what those actually are, then possibly a new fancy display. I wouldn't think I would need to replace the Xeon to make happy with any of those GPUs? I dunno.

I would like to go back to AMD but I don't see that happening until Zen+ at the earliest.
 

Yuriman

Diamond Member
Jun 25, 2004
5,530
141
106
A quad + HT with lower IPC and lower clocks... I probably would pass on that. 4 threads is really suiting me very nicely. I would honestly consider a Skylake/Cannon Lake i3 to replace my Ivy i5, as it would give me similar (stock) performance at much lower power, which is attractive to me considering I have no performance complaints in any of the games I play, which are mostly indie games with a low development budget and are poorly threaded, desktop performance is already good, and I highly value having a quiet, small, and unobtrusive machine.

Maybe if Zen can give me slightly better than my i5's single-threaded performance, only instead of the 35-40w Prime95 power consumption it draws at stock clocks (undervolted), it delivers that at 20-25w, I would consider that a nice upgrade.
 
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TheELF

Diamond Member
Dec 22, 2012
3,993
744
126

lehtv

Elite Member
Dec 8, 2010
11,900
74
91
No matter the year, no matter the API,FPS is locked at how fast you are able to run the main thread,if the heaviest workload you do is gaming 4 cores with higher single threaded speed will still be much better.
http://www.tekgrains.com/best-features-directx-12-vulkan-explained/

According to that slide, the game code is unevenly distributed across cores. Is it not possible to design game code that utilizes cores much more evenly than depicted here?
 

TheELF

Diamond Member
Dec 22, 2012
3,993
744
126
According to that slide, the game code is unevenly distributed across cores. Is it not possible to design game code that utilizes cores much more evenly than depicted here?
You could go to extreme ends to do that but it would not be beneficial,you would have to make tough tasks like enemy AI or physics much simpler and easier tasks much heavier which would not result in a good game.
Basically almost every console game does just that, that's why so many games are awesome graphics with nothing much else.
 

lolfail9001

Golden Member
Sep 9, 2016
1,056
353
96
According to that slide, the game code is unevenly distributed across cores. Is it not possible to design game code that utilizes cores much more evenly than depicted here?
Any program with event loop will have uneven distribution of load between threads.
 

guskline

Diamond Member
Apr 17, 2006
5,338
476
126
Like Russian Sensation, I have recently built 2-6700k rigs, one for me and one for my daughter and son-in-law. I could have saved some $ going with 6600ks but now having experience with 2500k/3770k and 4790k the price difference from 6600k to 6700k was small enough that I opted for the more expensive cpu to allow more flexible and powerful machines.

Interestingly, I used AMD Radeon video cards in both (RX 480 in mine and RX 460 in my daughter and son-in-laws). Why? They were a new architecture with promise for the future AND they were available.

ZEN keeps getting pushed back; Perhaps Dr. Siu wants to be absolutely sure they release a tried and true new platform. Unfortunately for AMD that is likely to compete against a new and likely very well-refined Kabylake platform.
 

Mr Evil

Senior member
Jul 24, 2015
464
187
116
mrevil.asvachin.com
You could go to extreme ends to do that but it would not be beneficial,you would have to make tough tasks like enemy AI or physics much simpler and easier tasks much heavier which would not result in a good game.
Basically almost every console game does just that, that's why so many games are awesome graphics with nothing much else.
The easy way of making a game engine multithreaded is splitting things like AI and physics into a thread each, but that's not the only way, or the best way of doing it. It's quite possible to parallelize the game into multiple threads that share AI, physics etc between them. That will distribute the load more evenly, and scale to more cores. Games aren't like that now because of the effort required, but that is slowly changing.
 

coercitiv

Diamond Member
Jan 24, 2014
6,400
12,849
136
Like Russian Sensation, I have recently built 2-6700k rigs, one for me and one for my daughter and son-in-law. I could have saved some $ going with 6600ks but now having experience with 2500k/3770k and 4790k the price difference from 6600k to 6700k was small enough that I opted for the more expensive cpu to allow more flexible and powerful machines.
Out of pure curiosity in relation to the required flexibility of the new machine, as of this moment, would your daughter need a more powerful CPU than an Ivy Bridge i5 @ 4Ghz+ ?
 

RussianSensation

Elite Member
Sep 5, 2003
19,458
765
126
So if they will offer Ivy/Haswell IPC with 50% more Cores/Threads at the same price you will go for Higher IPC and less cores/Treads in 2017 and DX-12/Vulkan era ????

I would. What's the point of having excess of slower CPU cores? Unless you do video encoding, rendering, encryption, distributed computing and workstation tasks, those extra cores are a nice paper spec, just like it is on the 6850K, 6900K and 6950X. Just like with high-end modern motherboards, a PC user really has to ask themselves what features are they really going to use and are they worth paying for?

I am yet to find a DX12/Vulkan PC game where the 8-10 core 6900 models are significantly faster than the i7 6700K. Maybe Total War: Warhammer? Not to mention, who buys an 8-10 core modern CPU and games at 1080p 60Hz?

Also, what makes you think AMD will sell an 8 core HT Zen for $349?

For probably 90% of PC gamers with limited budgets sitting on 1080p 60Hz + GTX1070 and below, they are better off buying a $180 Core i5-6400/6500 and a $100 Asus Z170-E/Asrock Z170 Extreme4/Pro4 and overclocking via BCLK to 4.5-4.6Ghz. The chance that AMD will have anything better than that for gaming at $180 is small imo.

I would love to be proven wrong but Kaby Lake will be even faster out of the box and should overclock better than Skylake. I have a feeling it won't be until 2018 or even later than PC games start to really use 6-8 cores.

For Ivy/Haswel users on i7 3770K/4770K/4790K, how is even an 8-core Zen an upgrade for gaming? For 2600K users who skipped Skylake, Haswell-E and Broadwell-E, it seems they are waiting for even faster CPU cores. If they haven't upgraded to those 3, it seems odd that they would upgrade to Zen either.

As I said before, for me, Zen is a workstation/multi-threaded/server play. That's where AMD has the greatest chance to gain market share and earn $$$.

If AMD wants to sell 8 slower cores, it needs to work with 2-3 developers on major AAA DX12/Vulkan titles and ensure that Zen convincingly beats 6700K and 6800K in these games. If that happens, PC gamers will get nervous that future titles are starting to become heavily threaded and become reluctant to build new gaming rigs around quad-core CPUs.

Here is a random game "no one plays" that mostly used just 2 cores; and because of lack of multi-threading in the game, it helps to show just how far behind AMD is in IPC:

i5 6600 is 129% faster than 8150, and 89% faster than 8350:

http://gamegpu.com/rts-/-стратегии/cossacks-3-test-gpu

40% gain in IPC is nowhere close to even catching up to Haswell.
 
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leoneazzurro

Golden Member
Jul 26, 2016
1,010
1,608
136
While you could be right, please note that 8350 is Piledriver, not Excavator nor Steamroller and also one application, possibly very badly optimized, is not a general trend.
 

guskline

Diamond Member
Apr 17, 2006
5,338
476
126
Out of pure curiosity in relation to the required flexibility of the new machine, as of this moment, would your daughter need a more powerful CPU than an Ivy Bridge i5 @ 4Ghz+ ?

her husband may do some web design work so I opted for the 4C/8T 6700k. Clocked stock at 4Ghz.
 

RussianSensation

Elite Member
Sep 5, 2003
19,458
765
126
While you could be right, please note that 8350 is Piledriver, not Excavator nor Steamroller and also one application, possibly very badly optimized, is not a general trend.

Here is a well-threaded AAA title:

http://gamegpu.com/action-/-fps-/-tps/assassin-s-creed-unity-test-gpu.html

3.6Ghz 8150 = 48 FPS
4.0Ghz 8350 = 57 FPS
4.7Ghz 9590 = 67 FPS

Vs.

3.5Ghz Haswell i3 4330 = 69 FPS
3.0Ghz i7 5960X = 107 FPS

Seems Intel is about 90-100% ahead in IPC. Excavator hardly moved IPC over Vishera.

Although, you are right that how well the game is optimized can have a tremendous impact. The successor to Unity performs miles faster on FX series.




That's why AMD really needs to work closer with AAA game developers so that Zen can shine under DX12/Vulkan.
 
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AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
No matter the year, no matter the API,FPS is locked at how fast you are able to run the main thread,if the heaviest workload you do is gaming 4 cores with higher single threaded speed will still be much better.
http://www.tekgrains.com/best-features-directx-12-vulkan-explained/


That graph doesnt compare a Quad vs 8-Core in DX-12/Vulkan.

If you only have 4 cores, your main thread will be slower because Game Code (Purple) and DirecX Driver (Blue) will only scale to 4 Cores. So even if you have higher IPC, your 4 Cores will need to compute more than the 8-Core CPUs.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
Here is a well-threaded AAA title:

http://gamegpu.com/action-/-fps-/-tps/assassin-s-creed-unity-test-gpu.html

3.6Ghz 8150 = 48 FPS
4.0Ghz 8350 = 57 FPS
4.7Ghz 9590 = 67 FPS

Vs.

3.5Ghz Haswell i3 4330 = 69 FPS
3.0Ghz i7 5960X = 107 FPS

Seems Intel is about 90-100% ahead in IPC. Excavator hardly moved IPC over Vishera.

Although, you are right that how well the game is optimized can have a tremendous impact. The successor to Unity performs miles faster on FX series.




That's why AMD really needs to work closer with AAA game developers so that Zen can shine under DX12/Vulkan.

Non of the games you posted are DX-12/Vulkan. I was specifically talking about DX-12/Vulkan era (2017).
 

Blue_Max

Diamond Member
Jul 7, 2011
4,227
153
106
I just want what AMD used to be known for having the huge advantage in - awesome built-in video. The APU.

AMD, your competition caught up with you and their "basic built in video" is now right on the heels of yours which used to be so far ahead. It's time to pick up the pace and release an APU that will again soar past the competition.

I don't know why they dropped the ball so bad on this one... the APU has been their bread & butter since it came out!
 

MajinCry

Platinum Member
Jul 28, 2015
2,495
571
136
@RussianSensation What we're seeing in those benchmarks is AMD's dreadful draw call deficit. Intel's equivalent processors (e.g, the i7 920 compared to my 965 be) are >3x better at handling draw calls in terms of framerate impact.

Boris Vorontsov touched on this on his forums ages ago. I'll see if I can find his posts on the matter. IIRC, he did a draw call experiment with a bunch of users back in 2012, and noticed that similarly performing processors from AMD/Intel performed drastically differently, with AMD getting smashed and intel coming out on top, when draw calls were piled on.

Edit: Here's one of Boris' posts touching on the matter. http://enbseries.enbdev.com/forum/viewtopic.php?f=2&t=4666&p=66273&hilit=dips#p66273
 
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