ATI Radeon HD 4890 vs. NVIDIA GeForce GTX 275
by Anand Lal Shimpi & Derek Wilson on April 2, 2009 12:00 AM EST- Posted in
- GPUs
The Cards and The Test
In the AMD department, we received two cards. One was an overclocked part from HIS and the other was a stock clocked part from ASUS. Guess which one AMD sent us for the review. No, it's no problem, we're used to it. This is what happens when we get cards from NVIDIA all the time. They argue and argue for the inclusion of overclocked numbers in GPU reviews when it's their GPU we're looking at. Of course when the tables are turned so are the opinions. We sincerely appreciate ASUS sending us this card and we used it for our tests in this article. The original intent of trying to get a hold of two cards was to run CrossFire numbers, but we only have one GTX 275 and we would prefer to wait until we can compare the two to get into that angle.
The ASUS card also includes a utility called Voltage Tweaker that allows gamers to increase some voltages on their hardware to help improve overclocking. We didn't have the chance to play with the feature ourselves, but more control is always a nice feature to have.
For the Radeon HD 4890 our hardware specs are pretty simple. Take a 4870 1GB and overclock it. Crank the core up 100 MHz to 850 MHz and the memory clock up 75 MHz to 975 MHz. That's the Radeon HD 4890 in a nutshell. However, to reach these clock levels, AMD revised the core by adding decoupling capacitors, new timing algorithms, and altered the ASIC power distribution for enhanced operation. These slight changes increased the transistor count from 956M to 959M. Otherwise, the core features/specifications (texture units, ROPs, z/stencil) remain the same as the HD4850/HD4870 series.
Most vendors will also be selling overclocked variants that run the core at 900 MHz. AMD would like to treat these overclocked parts like they are a separate entity altogether. But we will continue to treat these parts as enhancements of the stock version whether they come from NVIDIA or AMD. In our eyes, the difference between, say, an XFX GTX 275 and an XFX GTX 275 XXX is XFX's call; the latter is their part enhancing the stock version. We aren't going to look at the XFX 4890 and the XFX 4890 XXX any differently. In doing reviews of vendor's cards, we'll consider overclocked performance closely, but for a GPU launch, we will be focusing on the baseline version of the card.
On the NVIDIA side, we received a reference version of the GTX 275. It looks similar to the design of the other GT200 based hardware.
Under the hood here is the same setup as half of a GTX 295 but with higher clock speeds. That means that the GTX 275 has the memory amount and bandwidth of the GTX 260 (448-bit wide bus), but the shader count of the GTX 280 (240 SPs). On top of that, the GTX 275 posts clock speeds closer to the GTX 285 than the GTX 280. Core clock is up 31 MHz from a GTX 280 to 633 MHz, shader clock is up 108 MHz to 1404 MHz, and memory clock is also up 108 MHz to 2322. Which means that in shader limited cases we should see performance closer to the GTX 285 and in bandwicth limited cases we'll still be faster than the GTX 216 because of the clock speed boost across the board.
Rather than just an overclock of a pre-existing card, this is a blending of two configurations combined with an overclock from the two configurations from which it was born. And sure, it's also half a GTX 295, and that is convenient for NVIDIA. It's not just that it's different, it's that this setup should have a lot to offer especially in games that aren't bandwidth limited.
That wraps it up for the cards we're focusing on today. Here's our test system, which is the same as for our GTS 250 article except for the addition of a couple drivers.
The Test
| Test Setup | |
| CPU | Intel Core i7-965 3.2GHz |
| Motherboard | ASUS Rampage II Extreme X58 |
| Video Cards | ATI Radeon HD 4890 ATI Radeon HD 4870 1GB ATI Radeon HD 4870 512MB ATI Radeon HD 4850 NVIDIA GeForce GTX 285 NVIDIA GeForce GTX 280 NVIDIA GeForce GTX 275 NVIDIA GeForce GTX 260 core 216 |
| Video Drivers | Catalyst 8.12 hotfix, 9.4 Beta for HD 4890 ForceWare 185.65 |
| Hard Drive | Intel X25-M 80GB SSD |
| RAM | 6 x 1GB DDR3-1066 7-7-7-20 |
| Operating System | Windows Vista Ultimate 64-bit SP1 |
| PSU | PC Power & Cooling Turbo Cool 1200W |
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SiliconDoc - Tuesday, April 7, 2009 - link
Another red rooster who cannot argue with the facts and the truth, and doesn't want them known.Perhaps you'd notice, I didn't comment right away when the STORIED review came out, you FOOL.
I came days later, and made my comments after you had your bs fest of lies, so I don't expect a lot of responders, you DUMMY.
But you're here, and your response is calling for DEATH.
Now, if anyone needs to be banned, YOU DO.
Futhermore, I really don't care if you're here, and have enjoyed some of your posts, but the fact remains, where I have absolutely FACTUALLY retued your BS in some of your posts, you have no response - other than, your own personal rage.
I'll be glad to see how you can defend yourself, but you obviously cannot.
Go ahead, there's 22 pages, and I've pointed out your lies several times. Have at it. Good luck, just calling for DEATH, and spewing "ban him!" while carrying your torch of lies is just what I expect from someone who doesn't care what bs they spew.
You already claimed you can't understand - LOL - of course you can't, you'd have to straighten out yourself and your lies then.
Good luck doing that.
SiliconDoc - Monday, April 6, 2009 - link
LOL - the folding was crap forever on ati, and now it's slower.We know the release date for both cards, and the nvidia is already listed on the egg dude.
When you're a raging red rooster, nothing matters to you but lying for the 2 billion dollar loser - ati.
sidk47 - Friday, April 3, 2009 - link
You cannot argue with facts and the fact of the matter is that you can't help the world find a cure for cancer or Alzheimer's by buying an ATI!So those of you with an Internet connection, should buy an NVidia and fold@home all the time to help make the world a better place!
Take that ATI and your associated fanboys!
x86 64 - Sunday, April 5, 2009 - link
Folding at home is a total waste and is just an excuse to be smug and think you're special, so there to both of you."Oh I'm going to save the world by buying overpriced hardware and letting some university use it for studying the human genome. I'm such a humanitarian."
Please, you can justify your over indulgence any way you want but it still doesn't cover up the fact that you're trying to justify sitting on your asses instead of doing some real community work to help change the world.
Folding@home = Too fat and too lazy to really make an effort.
SiliconDoc - Monday, April 6, 2009 - link
Uhh, dude, they're doing it at college, on like triple TESLA machines with the "supercomputer" motherboards - so you know, go get an education and start whining about unbelievable game framerates - that's what's really going on -Professor cuda machine checker " What happened ? "
Gamer students " Oh, uhh, well it crashed again it was a Crysis, I mean uh, no crisis, last night and it took us about 5 hours to to reset the awesome TESLA cards. We'll come in tonight to keep an eye on it, and clean up the pizza boxes and lock up again professor."
" Very well."
WHO LOVES THE EDUCATION OF AMERICA? !!!
hahahahaha
LeonRa - Saturday, April 4, 2009 - link
Well, since you cannot argue with facts, it's a fact you are a stupid fanboy who doesn't know anything! Check your facts before you post something like that. It is a fact that you can do f@h with an ATI card, as I have been doing it for some time now. So STFU and go spill your hatred somewhere else!SiliconDoc - Tuesday, April 7, 2009 - link
You're not being honest there. A while back ati either couldn't do it all ( no port ) - or it was so pathetic - they had to make a new port - I know they did the latter, and as far having a long stretch where it wasn't available, or just not used much since it was so pathetically slow in compariosn, the fella has the right idea.Furthermore, unless something has recently changed significantly, the ati port is still WAY slower than the Nvidia for folding.
So anyway, nice try, but telling the truth might actually be something the red rooster crew should start practicing .... or perhaps not, considering lying a whole heckuva lot might make those 2 billion dollar ati loses into "sales" that make "overall a profit" a reality...
On the other hand, if people continuously notice the lying by the red fans, they might gravitate to the competition, for obvious reasons.
So, honesty, or more bs ? I think I know what you'll choose.
marraco - Friday, April 3, 2009 - link
I hope to see benchmarks with ATI in charge of graphics, and a Geforce in charge of PhysX.... kind of SLI/crossfire betwen ATIs and Geforces :)
A value-added of the geforces, is that, once you buy a new card, the old can unload Physics from the new card. Nice. I hate wasting old hardare.
On other side, most of the games on PhysX nvidia list don't relly work with GPGPU PhysX. Only with the old AGEIA cards.
Sadly, Crisys and Far Cry don't use PhysX. Only Havoc. And AMD still don't support it in hardware.
spinportal - Friday, April 3, 2009 - link
No mention of the death of the HD 4850X2 as the HD4890 trashes the power consumption, price, availability, speed and OC-ability. No mention of advantage of DX10.1 and the games available. Hey, even bad news is good news sometimes by spotlighting. What is really missing is the bang for buck quality (bucks spent for performance increase), and talk about price depression for the HD 4870 1GB model by 10$ to 15$ with $50 step increments.4850 (125)[20.9] 4870 (185)[27.9] 4890 (235)[31.7]
4870X2 (400)[35.0]
Nvidia is cramping its own style:
250 (150)[21.8] 260-216-55 (180)[27] 275 (250?)[31.3]
280 (290)[30.9] 285 (340)[32.8]
The GTX280 is dead now, overpriced for those trying to sneak into SLI. The GTX260 is overlapped with Core216 55nm you'd want to get, but Joe Consumer might mistakenly get the other 2 prior versions to clean out old inventory. The GTX285's price is not justified but more power to nVidia if they get the consumer's buck.
Gladly, by the low temps the dual slot blowback is voiding hot air properly so the vendors are finally manufacturing cards with common sense.
Too bad we have gone the way with power hungry beastly cards needing two 6-pins.
Also, too bad the effects of AF and 0x00, 2xAA, 4xAA and 8xMSAA modes are not investigated. It would be interesting to see how saturated the units get as AF and AA gets bumped and what are the best modes for nVidia and AMD.
Oh, nice blurb for nVidia's shadow enhancement, but ATi/AMD's tesselation enhancement is as much as a hit or miss feature. Will AMD have an tech edge when DX11 tesselation cometh?
SiliconDoc - Monday, April 6, 2009 - link
Hmm, that said, Derek might be crying, since he couldn't stop crowing about that 4850x2 last review - oh boy, you know - I guess he had the heads up and ati told him what card he needed to help push...You know how things are.
Anyway, good observation.