The NVIDIA GeForce GTX 650 Ti Review, Feat. Gigabyte, Zotac, & EVGA
by Ryan Smith on October 9, 2012 9:00 AM ESTCompute Performance
As always our final set of real-world benchmarks is composed of a look at compute performance. As we have seen with GTX 680 other Kepler cards, Kepler appears to be significantly less balanced between rendering and compute performance than GF110 or GF114/GF116 were, and as a result compute performance suffers. On the other hand, relative to the GTX 660 the GTX 650 Ti sacrifices a smaller portion of its compute performance than its ROP/L2/memory performance, so this may bode better for computer performance.
Our first compute benchmark comes from Civilization V, which uses DirectCompute to decompress textures on the fly. Civ V includes a sub-benchmark that exclusively tests the speed of their texture decompression algorithm by repeatedly decompressing the textures required for one of the game’s leader scenes. Note that this is a DX11 DirectCompute benchmark.
There really isn’t a lot to say here. The GTX 650 Ti is only slightly ahead of the GTX 550 Ti, never mind the GTX 560. Worse, it’s tied with the 7770 and well behind the 7850. Given the nature of the test, with cards on memory busses this small I believe we’ve run into a proxy test for memory bandwidth rather than compute throughput. Which just goes to show that all of that compute throughput is meaningless without the memory bandwidth and cache to feed the best.
Our next benchmark is SmallLuxGPU, the GPU ray tracing branch of the open source LuxRender renderer. We’re now using a development build from the version 2.0 branch, and we’ve moved on to a more complex scene that hopefully will provide a greater challenge to our GPUs.
Not surprisingly, the GTX 650 Ti loses to just about everything. SmallLuxGPU’s OpenCL renderer just doesn’t mesh well with Kepler and NVIDIA’s drivers. The resulting lead for the 7850 is nothing short of massive.
For our next benchmark we’re looking at AESEncryptDecrypt, an OpenCL AES encryption routine that AES encrypts/decrypts an 8K x 8K pixel square image file. The results of this benchmark are the average time to encrypt the image over a number of iterations of the AES cypher.
Unlike our previous OpenCL benchmark the GTX 650 Ti’s showing isn’t nearly as bad, but neither is it great. Both the GTX 560 and the 7770 are in the lead, but at least the improvement over the GTX 550 Ti is nothing short of amazing. At times NVIDIA’s problem isn’t where GTX 650 Ti is compared to last-generation cards, but rather it is compared to AMD’s strong Radeon HD 7000 series lineup.
Our fourth benchmark is once again looking at compute shader performance, this time through the Fluid simulation sample in the DirectX SDK. This program simulates the motion and interactions of a 16k particle fluid using a compute shader, with a choice of several different algorithms. In this case we’re using an (O)n^2 nearest neighbor method that is optimized by using shared memory to cache data.
Once more the GTX 650 Ti is in trouble. It can beat the GeForce 500 series, but even the 7770 is faster.
Finally, we’ll take a look at one last benchmark to our compute run with the benchmarkable version of the Folding@Home client. Folding@Home and similar initiatives are still one of the most popular consumer compute workloads, so it’s something NVIDIA wants their GPUs to do well at.
Here’s another case where memory bandwidth and L2 cache appear to be a problem. The GTX 650 Ti is much farther behind the GTX 660 than we would have expected, and even the GTX 560 can take a lead here. On the other hand memory bandwidth bottlenecking isn’t so bad that EVGA’s GTX 650 Ti can’t still take the lead over the other factory overclocked cards.
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chizow - Tuesday, October 9, 2012 - link
On second glance, the AC3 bundle makes the $150 MSRP palatable. While I agree a straight MSRP or $20 MIR at the $130 price point would have been more preferable for many, a bonafide AAA title like Assassin's Creed 3 prior to release is suitable currency. Market value for the game code is at least $20-30 (going by historic FS/Ebay prices of similar AAA title Steam codes) and up to $50-60 for anyone who was going to buy the game at release anyways.Personally I'm shocked Nvidia would bundle a such a relevant game code like this with a value part in the $150 price market. Hopefully the generosity filters upward to the GTX 660 and above as the 660 never got a bundle and the BL2 promo on 660Ti and faster parts seems to have dried up at most retailers.
RussianSensation - Tuesday, October 9, 2012 - link
Ok and what happens after you beat AC3? You get a card that tanks in GPU demanding games.7850's minimum frames rates are nearly as high as average framerates in games like Crysis 1/2, Skyrim, Witcher 2.
http://www.bit-tech.net/hardware/graphics/2012/10/...
You buy a GPU to play 100s of games not 1 game. NV bundled a game on purpose so people would use this argument that well the card is $150 but you get a $50 with it. That's marketing right there. It's still a $150-170 card (if we include after-market versions) that has far slower performance than $160-190 competitor.
I think $129 would have been a far more reasonable price. Instead, NV delivered a card that has worse price/performance than either the 7770 or the 7850. And if we take 7850's overclocking into consideration, well then it's a total blowout as 7850 OC ~ HD7870/GTX580 in performance.
chizow - Tuesday, October 9, 2012 - link
"Ok and what happens after you beat AC3? You get a card that tanks in GPU demanding games."You still have a card that is $30-$50 cheaper than its MSRP because of the bundled AC3, so while it may not have been worthwhile at $150-$170, it would certainly justify its $120-$140 pricetag.
Whether you care to admit it or not, AC3 is a valid form of currency as by definition, currency is simply a medium for exchange. We're not talking about games nobody cares about here (See: Gaming Evolved titles), we're talking about some of the most anticipated games of the year on any platform with BL2 and AC3, bundled PRIOR to release while they are still relevant.
If you were in the market for AC3, you saved $50. If you don't care for AC3, you will be able to easily unload it for ~$30. That effectively reduces the price of the card from $150-$170 to $120-$140.
Blazorthon - Tuesday, October 9, 2012 - link
*wrong post with this above, oops*Don't forget, the 7850 comes with games and so does the 7770. Coming with a game is necessary just to compete right now. The 7770 also has some highly factory overclocked models that can inch out the 650 Ti while still being cheaper. The 650 Ti would do better at $10 or $20 lower and a MIR is a great way to accomplish that since a lot of people forget to do them anyway, but buy the card because of the after MIR price.
chizow - Tuesday, October 9, 2012 - link
The 7770 is bundled with Nexuiz....seriously why even bother mentioning it? What would you value Nexuiz at? $5? $10?Sleeping Dogs with the higher-end AMD cards is decent, still not as strong as Nvidia's BL2 promo, but yeah we are talking about AC3 here which will undoubtedly be a top 5 title for this holiday season.
The 650Ti has some OC'd models as well that bring it close in performance to the 7850 1GB, but of course, the 7850 distances itself again once OC'd. As I said, a $15-20 price drop would certainly make more sense for the 650Ti and I'm sure we'll start seeing some rebates in a few weeks as all of the higher-end GeForce models have started seeing them in recent weeks.
hqt4991 - Tuesday, October 9, 2012 - link
I don't know about you, but I am quite unsure that nobody cares about Far Cry 3, Medal of Honor: Warfighter, Hitman: Absolution, Sleeping Dogs, DiRT 3, Dragon Age 2, Saints Row The Third, the Tomb Raider remake or (especially) Bioshock Infinite. I know I do.On topic, I agree with Ryan. The 650 Ti isn't strictly a bad card, just that it doesn't make any sense to choose it over the 7850, unless you are absolutely cash-strapped.
chizow - Tuesday, October 9, 2012 - link
Here's the difference between those games you listed and the two latest promos from Nvidia:I would actually pay full retail price for BL2 and AC3 and did actually have BL2 pre-ordered prior to Nvidia's promo.
All the games you listed for Gaming Evolved I would pass on at launch or wait until they were $10 or less in a Steam sale. That's not to say they are bad titles and some may certainly feel differently, but to me and I'm sure many others, they do not carry the same value or currency as the last few games offered by Nvidia.
Also, afaik, only Sleeping Dogs was offered by AMD as a promo bundle, so until they start bundling some of the better GE titles there's really not much of a comparison to make.
Death666Angel - Wednesday, October 10, 2012 - link
"I would actually pay full retail price for BL2 and AC3 and did actually have BL2 pre-ordered prior to Nvidia's promo."So why are you two arguing about your video game taste? Someone values AC3 higher, someone values SD higher. It's a personal thing. I don't want either of those and am not a big fan of bundled software. So no added game would be a plus in my book.
chizow - Thursday, October 11, 2012 - link
Because video game tastes are a direct function of demand. I'm not just referring to my own video game taste, I'm making the point that AC3 is going to appeal to far more gamer's video game tastes which equates to higher demand for it at launch, and by extension, it's buy and sell price and demand will be much higher than any Gaming Evolved titles bundled with AMD cards.That brings us full circle to the comment he took issue with about games nobody cares about, its all about relevance and those games he listed are much less relevant to the vast majority of gamers, plain and simple.
CeriseCogburn - Friday, October 12, 2012 - link
Dirt3 is an amd promo bundle game, and my amd total fanboy buddy just said tonight he hates it because after you install it in order to get the real game you have to go buying all their packs and upgrades spending a buttload of money so it's nothing but crap.So there we have the amd marketing kickback extra expense for the disappointed amd penny pinching moaning poor boy amd fan...
LOL
It's funny because it's 100% true but also so freakin sad.