• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.
  • The forums have been upgraded with support for dark mode. By default it will follow the setting on your system/browser. You may override it by scrolling to the end of the page and clicking the gears icon.

Radeon HD 4890 3DMark Performance Revealed

Shaders? They need more ROPs!
 
WarEagleAU said:
I hate that my work blocks pictures of yalls results. Looks to be a nice little improvement, but ATI needs to get on the Physx deal.
Click to expand...

ATi will get on the Physx deal when DirectX11 is out ;) , and then where do you think Physx will stand?

I'm pretty neutral to the whole AMD/Nvidia thing but I see this as reallity, Physx is going to be just as mainstream as Itanium was (and is) for Intel. No matter how much Nvidia tries to push the matter or promote it.
 
ROPs!? We need more TMUs!

Agreed. From analysis of 4830 performance, it is quite clear that the bottleneck is ROP and TMU not shader.

HOWEVER, scaling shaders is much much easier than redesigning the ROP/TMU stages. It's pimping shader statistics because it is the easiest and cheapest modification.

*****

I hope w1z will benchmark this against the RV770 with identical shader clocks. That way we can see if there really has been any shader optimisations, or if, in reality, the RV790 is *only* an overclocked RV770 (with marginal internal layout changes to avoid hotspots etc.)
 
TheMailMan78 said:
You don't what?
Click to expand...

..find them unreliable, though we never know. HD 4850 was listed till the last moment as having 480 SPs. But looking at these benches, I don't think anything more than 800 SPs are on that card, given that it's already clocked high.
 
btarunr said:
..find them unreliable, though we never know. HD 4850 was listed till the last moment as having 480 SPs. But looking at these benches, I don't think anything more than 800 SPs are on that card, given that it's already clocked high.
Click to expand...

:laugh: Ok. Your word is gold then :toast:

My "sources" say that shader count will become more and more important in the coming months. Disclaimer: My source is an AMD shareholders letter. Which Iv used to wipe my ass with in the past.
 
Maybe its a driver issue,

All ATI cards start slow thanks to drivers so give it a month or two and it'll be quite a show!:toast:
 
Ok, here is what I read so far...one reviewer said that he benchmarked the video card using Vantage at 1280x1024.
Based on a Q9450 @ 3.60Ghz (testbed appears to be similar between video cards):
4870............ (750/900): P7715
4870 ............ (850/975 @ 3.0Ghz unless that was a typographical error): P8696
HD4890......... (850/975): P9801
GTX280 (600/1300/1100): P9367
GTX285 (650/1475/1240): P10436


DailyTech believes the drivers are not optimized and they will benchmark the card this weekend with another set of drivers. Hopefully we will see some game benchmarks soon.
 
Last edited:
EastCoasthandle said:
Ok, here is what I read so far...one reviewer said that he benchmarked the video card using Vantage at 1280x1024:
Based on a Q9450 @ 3.60Ghz a
4870............ (750/900): P7715
HD4890......... (850/975): P9801
GTX280 (600/1300/1100): P9367
GTX285 (650/1475/1240): P10436


DailyTech believes the drivers are not optimized and they will benchmark the card this weekend with another set of drivers.
Click to expand...

Where did the 9801 come from? And yes, drivers. When is this card to be released?
 
farlex85 said:
Where did the 9801 come from? And yes, drivers. When is this card to be released?
Click to expand...

I've updated my other post to include one more result (4870 at 850/975). The 9801 is the GPU result only from vantage. You can click on the "4890"<--to read that post. Along with this post


4890 top, 4870 bottom...been seen in a few threads already around the net.
 
Last edited:
Different ASIC :)

An RV770 from our reviews:
gpu_small.jpg


The RV790:
bta121.jpeg


Look at the arrangement of the components on the package, around the die.
 
LOOK! :twitch:
So, it's 6-pin after all.
 
Dual 6 pin yeah.
 
I can confirm that the die-size of RV790 is greater than that of RV770. There is 'more' of something in this GPU.
 
Well that throws the "it's just a higher clocked 4870" out of the window.

Fuds dispelled so far:
It is not a 8+6 pin design specifically
Die size is not the same therefore not just a higher clocked 4870
animatoni.gif

done by someone else

more to come...
 
Last edited:
The PCB has provision for 8+6 pins, but that's very optional. Manufacturers may choose use a 8+6 pin design, if they feel it helps their factory-overclocked models. You will note that the reference PCB for GeForce GTX 285 has provision for 8+6 pins, though the product ended up with only 6+6.

The RV790 is a 'reworked' RV770, not an RV770 with higher clocks. So when one says 'it's just an overclocked HD 4870", it should be taken in context of the point that both GPUs have near-identical specs (so far), and not literally.
 
btarunr said:
The PCB has provision for 8+6 pins, but that's very optional. Manufacturers may choose use a 8+6 pin design, if they feel it helps their factory-overclocked models.

The RV790 is a 'reworked' RV770, not an a RV770 with higher clocks. So when one says 'it's just an overclocked HD 4870", it should be taken in context of the point that both GPUs have near-identical specs (so far), and not literally.
Click to expand...
From the context that I've read posted on the issue it did read to me "just a 4870 clocked higher'. In reality (which others have pointed out) that this is a refresh of the RV770. No that does not mean it's a next gen GPU or a different current gen GPU. Just a refresh...which from my prospective is more then just an overclocked 4870. And cannot draw any comparisons of the use of such a term based on the information so far (unless there is actual information to suggest otherwise). However as with any new release like this I look forward to knowing more about what this RV790 is when it's publicly reviewed.
 
Last edited:
btarunr said:
I can confirm that the die-size of RV790 is greater than that of RV770. There is 'more' of something in this GPU.
Click to expand...

Hmmmmmm This is becoming very interesting. Maybe it does in fact have more than 800 shaders.
 
Looking pretty tasty. Come on then, let's get some game benchies please!
 
Salsoolo said:
any info on TDP?
Click to expand...

I've only found a pic showing idle temps of 900/1000. Which IMO are decent when compared to the 4870 during its release.
200962333320128186233321090.jpg


Until the card is release we have to take all this pre-released information with a grain of salt.
 
Hmmmm i wonder if these will work in Hybrid with a 4870x2 in CrossfireX??
 
You must log in or register to reply here.
Back
Top