[Hardcorp] GALAXY GTX 660 Ti GC OC vs. OC GTX 670 & HD 7950

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3DVagabond

Lifer
Aug 10, 2009
11,951
204
106
I agree with the sentiment that if the slower card overall wins in 3D mk11, the benchmark is useless. It needs to reflect the real world, not be important unto itself.
 

ZimZum

Golden Member
Aug 2, 2001
1,281
0
76
RS is a straight shooter. I've been reading his posts for years, he certainly calls it like he sees it, and I've seen him praise Nvidia in the past too. I don't think any other poster here posts as many informative, information/benchmark backed posts than RS.

+1

Most helpful poster in VC&G and the least biased. And its not even close.
 

biostud

Lifer
Feb 27, 2003
18,407
4,968
136
I would really like to go nvidia since one of the games I'm going to spend some time playing is borderlands 2, but the price/performance ratio just not as good as AMD's @ 1440p.
Danish prices ATM
GTX 670 ~$475
GTX 660 2Gb ~ $370
7950 ~$390
 

VulgarDisplay

Diamond Member
Apr 3, 2009
6,193
2
76
I would really like to go nvidia since one of the games I'm going to spend some time playing is borderlands 2, but the price/performance ratio just not as good as AMD's @ 1440p.
Danish prices ATM
GTX 670 ~$475
GTX 660 2Gb ~ $370
7950 ~$390

Honestly, I don't see Borderlands 2 taxing GPU's on either side. Unless you want the Physx effects.

It may be a TWIMTBP title, but the difference is there is any at all will likely be something like 80fps for AMD vs. 90 fps for Nvidia. So, it won't matter at all in this title, and at 1440p the added VRAM on the 7950 may actually help it outperform nvidia in the game.
 

toyota

Lifer
Apr 15, 2001
12,957
1
0
Honestly, I don't see Borderlands 2 taxing GPU's on either side. Unless you want the Physx effects.

It may be a TWIMTBP title, but the difference is there is any at all will likely be something like 80fps for AMD vs. 90 fps for Nvidia. So, it won't matter at all in this title, and at 1440p the added VRAM on the 7950 may actually help it outperform nvidia in the game.
you actually think Borderlands 2 will use over 2gb of vram at 2560x1440? there is ZERO chance of that happening.
 

tviceman

Diamond Member
Mar 25, 2008
6,734
514
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www.facebook.com
Source?

Sea Islands taped out quite some time ago, we could see the first version as early as December.

GK110 has been verbally confirmed to be a GeForce product eventually, and will be on the market in the professional sector in Q4. It is only a matter of time before it will be a GeForce product. I do not need to provide links for what is both common sense and common knowledge. It is my personal prediction that it will be released as a very high priced GeForce product in December, but it is probably more likely it will be out Q1 next year.

And Sea Islands has been confirmed by AMD to be a 2013 product. This has been linked to over and over again on this forum, and also shown in AT articles.
 
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SirPauly

Diamond Member
Apr 28, 2009
5,187
1
0
Don't disagree with your speculation on GK-110 but where was it verbally confirmed to be a GeForce part?
 

sontin

Diamond Member
Sep 12, 2011
3,273
149
106
GK110 is GK104 with a wider bus, more units and a few HPC-features. The difference between GF110 and GF114 was much bigger than this.
 

Olikan

Platinum Member
Sep 23, 2011
2,023
275
126
VCE has already been tested and it works on desktop HD7000 series GPUs just as well as it does on GTX600 series for video transcoding - which is to say terrible, compared to native CPU for rendering quality or in regard to speed compared to QuickSync.

QuickSync = speed
CPU = quality
AMD/NV transcoding = very poor for speed and quality; in other words worthless in their current state.

wooo thx for the link, i have looking for this review for a long time.... :biggrin:
 

tviceman

Diamond Member
Mar 25, 2008
6,734
514
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www.facebook.com
Don't disagree with your speculation on GK-110 but where was it verbally confirmed to be a GeForce part?

I'll see if I can find it later. It was at the end of the GK110 articles that came out when GK110 was announced. The comment went something like it will definiltey be a Geforce product, but Nvidia would evaluate the timing of release when full production begins, with professional markets likely getting the first batch of units.
 

tviceman

Diamond Member
Mar 25, 2008
6,734
514
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www.facebook.com
GK110 is GK104 with a wider bus, more units and a few HPC-features. The difference between GF110 and GF114 was much bigger than this.

You are way wrong on this. GK110 has way more HPC features than GF110 did. The difference between GK110 and GK104 is larger than GF110 and GF104 in almost every way possible. Features, abilities, die size, amount of shaders.
 

SirPauly

Diamond Member
Apr 28, 2009
5,187
1
0
I'll see if I can find it later. It was at the end of the GK110 articles that came out when GK110 was announced. The comment went something like it will definiltey be a Geforce product, but Nvidia would evaluate the timing of release when full production begins, with professional markets likely getting the first batch of units.

Thanks!

Apoppin said:
What about the GTX “780″?

There were a lot of questions left unanswered and this editor was able to get his question answered by a Nvidia official afterward. The question was naturally about the future GeForce GPU that would be based on the GK110 – the video card using a 7.1 Billion transistor GPU. Of course, Nvidia doesn’t discuss unreleased products, but it was made clear that there would be such a card after the demand for Tesla and Quadro were met.

http://alienbabeltech.com/main/?p=29692
 
Feb 19, 2009
10,457
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You are way wrong on this. GK110 has way more HPC features than GF110 did. The difference between GK110 and GK104 is larger than GF110 and GF104 in almost every way possible. Features, abilities, die size, amount of shaders.

Rumored specs on GK110 are nuts, with leaks from china suggesting its a massive die, nearly 600mm2. Its should be a VERY big jump in performance above gk104.

2013, looks like its going to be NV with the performance crown (at the expense of power use). Sea Islands so far does not look to be a massive increase above Tahiti, with ~25% more resources/die space only, so its unlikely going to be competing on raw performance.

Also we can understand why NV isn't promising anything for the consumer side until their HPC market demands are met.. i just doubt TSMC has the capability to produce on 28nm a gpu that massive with a decent yield*.

*Low yields are fine for HPC markets where NV can charge rediculous% markup prices.
 

Hypertag

Member
Oct 12, 2011
148
0
0
The GK110 white sheet said it would have 15 SMX units and a 384-bit memory bus. The GK114 has 8 SMX units with a 256-bit bus. If Nvidia can actually manufacture a GK110 with all 15 units enabled, and can get the clock speeds at least decent, it could get close to approaching GTX 690 performance.
 

tviceman

Diamond Member
Mar 25, 2008
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Rumored specs on GK110 are nuts, with leaks from china suggesting its a massive die, nearly 600mm2. Its should be a VERY big jump in performance above gk104.

2013, looks like its going to be NV with the performance crown (at the expense of power use). Sea Islands so far does not look to be a massive increase above Tahiti, with ~25% more resources/die space only, so its unlikely going to be competing on raw performance.

Also we can understand why NV isn't promising anything for the consumer side until their HPC market demands are met.. i just doubt TSMC has the capability to produce on 28nm a gpu that massive with a decent yield*.

*Low yields are fine for HPC markets where NV can charge rediculous% markup prices.


Hasn't the die size been estimated at 550mm^2 already? Anyways, yeah I don't think they will have fully functional chips at first, but going into production a year after 28nm has been producing commercial products, and with Nvidia taking extra time on it, it shouldn't have the production issues GF100 had. I think they are going to launch very limited run in December or January with 1-2 SMX's units disabled, and then sometime in May or so next year bring out fully unlocked GK110-based Geforce cards. I think we'll see cards with 13 SMX's and 11 SMX's enabled at first.
 

RussianSensation

Elite Member
Sep 5, 2003
19,458
765
126
wooo thx for the link, i have looking for this review for a long time.... :biggrin:

I love how they put those buttons for every software they tested so that you can easily compare the visual quality of various GPU/CPU/QuickSync solutions. From that review, I'd say video transcoding via GPU may be sufficient for a smartphone, or a tablet without a high resolution screen, but not much else.
 
Feb 19, 2009
10,457
10
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They have updated their high AA benches. As expected the gap vs the 670 grows to 15-20%.

Not sure if they are serious thinking its valid benching a high OC 660ti vs a "reference" biosed 7950 which doesn't even operate at 925mhz constantly..
 

RussianSensation

Elite Member
Sep 5, 2003
19,458
765
126
Rumored specs on GK110 are nuts, with leaks from china suggesting its a massive die, nearly 600mm2. Its should be a VERY big jump in performance above gk104.

2013, looks like its going to be NV with the performance crown (at the expense of power use). Sea Islands so far does not look to be a massive increase above Tahiti, with ~25% more resources/die space only, so its unlikely going to be competing on raw performance.

A couple thoughts of mine:

1) If the die is so massive, and NV is able to sell GTX680 for $500, why would they sell a GPU 2x larger for $500, if it has so much more performance? Unless 8970 gives them strong competition, NV has no incentive to price the 780 for $499. If it's 50%+ faster than a GK104 and has almost double the die size, and has the performance lead, NV can crank it to $649+. They did it before with GTX280 and even more for 8800GTX. The only reason NV dropped GK104 at $500 is because it's not really any faster than AMD's card. So they couldn't realistically charge much more. If NV has a substantially faster chip, they'll add the NV premium in no time -- they did in the past every single time they had a large lead. Now you may say well GTX480 and 580 stayed at $500 but remember AMD's cards were $370. If HD8970 is $550, GTX780 will be $650+.

2) 50% faster than GK104 and using 1080P as a yard stick starts to become questionable. At that level of performance, 1080P is no longer stressing the GPUs for most games (i.e., not every game will be like Crysis 3 or Metro Last Light).

At 2560x1600, HD7970 = GTX680 (TPU, Computerbase), HD7970 Ghz leads by 9% to 12%, depending on the source.

If 8970 has 2560 SPs, 48 ROPs and even higher clocks, 25-30% gain is possible. Suddenly, you are looking at 36% to 45% faster than a GTX680 at 1600P. GTX780 will probably win overall but at higher resolutions, it'll be close I bet. And honestly the market forf people who want to spend $500+ on yet another new generation GPU to play console ported games at 1080P is shrinking every generation. GTX670/680 should be fast enough for most games at 1080P, why even bother upgrading unless you must use SSAA or need 60 fps minimum at all times? I think 8970 and 780 will be aimed strictly at 2560x1600 users. Unless games start to get a lot more demanding soon, 1080P testing for the new flagship generation may become even less relevant.

Skyrim already shows us that 1080P is almost entirely CPU limited for current generation GPUs while at 1600P, the picture is entirely different. Right now a 925mhz 7970 = 680 at high resolutions. That means something like an 1100mhz 2560SP 48 ROP 8970 may have a chance.
 
Last edited:
Feb 19, 2009
10,457
10
76
A couple thoughts of mine:

1) If the die is so massive, and NV is able to sell GTX680 for $500, why would they sell a GPU 2x larger for $500, if it has so much more performance? Unless 8970 gives them strong competition, NV has no incentive to price the 780 for $499. If it's 50%+ faster than a GK104 and has almost double the die size, and has the performance lead, NV can crank it to $649+. They did it before with GTX280 and even more for 8800GTX. The only reason NV dropped GK104 at $500 is because it's not really any faster than AMD's card. So they couldn't realistically charge much more. If NV has a substantially faster chip, they'll add the NV premium in no time -- they did in the past every single time they had a large lead. Now you may say well GTX480 and 580 stayed at $500 but remember AMD's cards were $370. If HD8970 is $550, GTX780 will be $650+.

2) 50% faster than GK104 and using 1080P as a yard stick starts to become questionable. At that level of performance, 1080P is no longer stressing the GPUs for most games (i.e., not every game will be like Crysis 3 or Metro Last Light).

At 2560x1600, HD7970 = GTX680 (TPU, Computerbase), HD7970 Ghz leads by 9% to 12%, depending on the source.

If 8970 has 2560 SPs, 48 ROPs and even higher clocks, 25-30% gain is possible. Suddenly, you are looking at 36% to 45% faster than a GTX680 at 1600P. GTX780 will probably win overall but at higher resolutions, it'll be close I bet.

Prices, im not going to speculate or really care, if its the fastest thing around im pretty sure they can even sell it for $900 and ppl would still buy more than they can produce with TSMC's well know capabilities.

But looking at the GK110 specs, its no weakling at high res, much more ROPS and bandwidth vs gk104 suggests it will behave very much like Tahiti, retaining great perf at higher res.

8970 has 25% more of everything, if clock speeds remain the same, you can expect ~25% increase with perfect scaling (no reason to doubt it given how well GCN scales). A realistic scenario is 25-40%, but i suspect GK110 is going to be more than 50% faster than gk104, if clock speeds are similar we are looking at ~70% or more, which is not beyond realism given its huge die size vs gk104 (~294mm2 vs 550-600mm2).
 
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