AMD’s Radeon HD 6870 & 6850: Renewing Competition in the Mid-Range Market
by Ryan Smith on October 21, 2010 10:08 PM ESTNVIDIA’s 6870 Competitor & the Test
As we mentioned on the front page of this article, AMD and NVIDIA don’t officially have competing products at the same price points. The 6870 and 6850 are more expensive than the GTX 460 1GB and 768MB respectively, and above the 6870 is the GTX 470. However NVIDIA is particularly keen to have a competitor to the 6870 that isn’t a GTX 470, and so they’re pushing a 2nd option: a factory overclocked GTX 460 1GB.
As a matter of editorial policy we do not include overclocked cards on general reviews. As a product, reference cards will continue to be produced for quite a while, with good products continuing on for years. Overclocked cards on the other hand come and go depending on market conditions, and even worse no two overclocked cards are alike. If we did normally include overclocked cards, our charts would be full of cards that are only different by 5MHz.
However with the 6800 launch NVIDIA is pushing the overclocked GTX 460 option far harder than we’ve seen them push overclocked cards in the past –we had an EVGA GTX 460 1GB FTW on our doorstep before we were even back from Los Angeles. Given how well the GTX 460 overclocks and how many heavily overclocked cards there are on the market, we believe there is at least some merit to NVIDIA’s arguments, so in this case we went ahead and included the EVGA card in our review. As a reference point it's clocked at 850Mhz and 4GHz memory versus 675MHz core and 3.6MHz memory for a stock GTX 460, giving it a massive 26% core overclock and a much more moderate 11% memory overclock.
However with that we’ll attach the biggest disclaimer we can that while we’re including the card, we don’t believe NVIDIA is taking the right action here. If they were serious about having a higher clocked GTX 460 on the market, then they need to make a new product, such as a GTX 461. Without NVIDIA establishing guidelines, these overclocked GTX 460 cards can vary in clockspeed, cooling, and ultimately performance by a very wide margin. In primary reviews such as these we’re interested in looking at cards that will be around for a while, and without an official product from NVIDIA there’s no guarantee any of these factory overclocked cards will still be around.
If nothing else, pushing overclocked cards makes for a messy situation for buyer. An official product provides a baseline of performance that buyers can see in reviews like ours and expect in any cards they buy. With overclocked cards, this is absent. Pushing factory overclocked cards may give NVIDIA a competitive product, but it’s being done in a way we can’t approve of.
Moving on, for today’s launch we’re using AMD’s latest beta launch drivers, version 8.782RC2, which is analogous to Catalyst 10.10. For the NVIDIA cards we’re using the WHQL version of 260.89.
Keeping with our desire to periodically refresh our benchmark suite, we’ve gone ahead and shuffled around a few benchmarks. We’ve dropped Left 4 Dead (our highest performing benchmark) and the DX11 rendition of BattleForge for Civilization 5 and Metro 2033 respectively, both running in DX11 mode.
With the refresh in mind, we’ve had to cut short our usual selection of cards, as we’ve had under a week to (re)benchmark everything and to write this article, shorter than what we usually have for an article of this magnitude. We’ll be adding these new cards and the rest of our normal lineup to the GPU Bench early next week when we finish benchmarking them.
| CPU: | Intel Core i7-920 @ 3.33GHz |
| Motherboard: | Asus Rampage II Extreme |
| Chipset Drivers: | Intel 9.1.1.1015 (Intel) |
| Hard Disk: | OCZ Summit (120GB) |
| Memory: | Patriot Viper DDR3-1333 3 x 2GB (7-7-7-20) |
| Video Cards: |
AMD Radeon HD 6870 AMD Radeon HD 6850 AMD Radeon HD 5870 AMD Radeon HD 5850 AMD Radeon HD 5770 AMD Radeon HD 4870 NVIDIA GeForce GTX 480 NVIDIA GeForce GTX 470 NVIDIA GeForce GTX 460 1GB NVIDIA GeForce GTX 460 768MB NVIDIA GeForce GTS 450 NVIDIA GeForce GTX 285 NVIDIA GeForce GTX 260 Core 216 EVGA GeForce GTX 460 1GB FTW |
| Video Drivers: |
NVIDIA ForceWare 260.89 AMD Catalyst 10.10 |
| OS: | Windows 7 Ultimate 64-bit |
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Chris Peredun - Friday, October 22, 2010 - link
Not bad, but consider that the average OC from the AT GTX 460 review was 24% on the core. (No memory OC was tried.)http://www.anandtech.com/show/3809/nvidias-geforce...
thaze - Friday, October 22, 2010 - link
German magazine "PC Games Hardware" states the 68xx need "high quality" driver settings in order to reach 58xx image quality. Supposedly AMD confirmed changes regarding the driver's default settings.Therefore they've tested in "high quality" mode and got less convincing results.
Details (german): http://www.pcgameshardware.de/aid,795021/Radeon-HD...
Ryan Smith - Friday, October 22, 2010 - link
Unfortunately I don't know German well enough to read the article, and Google translations of technical articles are nearly worthless.What I can tell you is that the new texture quality slider is simply a replacement for the old Catalyst AI slider, which only controlled Crossfire profiles and texture quality in the first place. High quality mode disables all texture optimizations, which would be analogous to disabling CatAI on the 5800 series.So the default setting of Quality would be equivalent to the 5800 series setting of CatAT Standard.
thaze - Saturday, October 30, 2010 - link
"High quality mode disables all texture optimizations, which would be analogous to disabling CatAI on the 5800 series.So the default setting of Quality would be equivalent to the 5800 series setting of CatAT Standard. "According to computerbase.de, this is the case with Catalyst 10.10. But they argue that the 5800's image quality suffered in comparison to previous drivers and the 6800 just reaches this level of quality. Both of them now need manual tweaking (6800: high quality mode; 5800: CatAI disabled) to deliver the Catalyst 10.9's default quality.
tviceman - Friday, October 22, 2010 - link
I would really like more sites (including Anandtech) to investigate this. If the benchmarks around the web using default settings with the 6800 cards are indeed NOT apples to apples comparisons vs. Nvidia's default settings, then all the reviews aren't doing fair comparisons.thaze - Saturday, October 30, 2010 - link
computerbase.de also subscribes to this view after having invested more time into image quality tests.Translation of a part of their summary:
" [...] on the other hand, the textures' flickering is more intense. That's because AMD has lowered the standard anisotropic filtering settings to the level of AI Advanced in the previous generation. An incomprehensible step for us, because modern graphics cards provide enough performance to improve the image quality.
While there are games that hardly show any difference, others suffer greatly to flickering textures. After all, it is (usually) possible to reach the previous AF-quality with the "High Quality" function. The Radeon HD 6800 can still handle the quality of the previous generation after manual switching, but the standard quality is worse now!
Since we will not support such practices, we decided to test every Radeon HD 6000 card with the about five percent slower high-quality settings in the future, so the final result is roughly comparable with the default setting from Nvidia."
(They also state that Catalyst 10.10 changes the 5800's AF-quality to be similar to the 6800's, both in default settings, but again worse than default settings in older drivers.)
Computer Bottleneck - Friday, October 22, 2010 - link
The boost in low tessellation factor really caught my eye.I wonder what kind of implications this will have for game designers if AMD and Nvidia decide to take different paths on this?
I have been under the impression that boosting lower tessellation factor is good for System on a chip development because tessellating out a low quality model to a high quality model saves memory bandwidth.
DearSX - Friday, October 22, 2010 - link
Unless the 6850 overclocks a good 25%, what 460s reference 460s seem to overclock on average, it seems to not be any better overall to me. Less noise, heat, price and power, but also less overclocked performance? I'll need to wait and see. Overclocking a 460 presents a pretty good deal at current prices, which will probably continue to drop too.Goty - Friday, October 22, 2010 - link
Did you miss the whole part where the stock 6870 is basically faster (or at worst on par with) the overclocked 460 1GB? What do you think is going to happen when you overclock the 5870 AT ALL?DominionSeraph - Friday, October 22, 2010 - link
The 6870 is more expensive than the 1GB GTX 460. Apples to apples would be DearSX's point -- 6850 vs 1GB GTX 460. They are about the same performance at about the same price -- $~185 for the 6850 w/ shipping and ~$180 for the 1GB GTX 460 after rebate.The 6850 has the edge in price/performance at stock clocks, but the GTX 460 overclocks well. The 6850 would need to consistently overclock ~20% to keep its advantage over the GTX 460.