[Autopsy] ATI Radeon HD 4870 Update: Review

[Opteron146]

someone posted results for crysis 4870 at vr-zone, but seems fake. why would 4870CF scale so well in crysis when we know 4850CF doesn't really?

Maybe because the 4850 is bandwidth limited by GDDR3, while the 4870 isnt ?

@GDDR5 / 1GB cards:

Quimonda is ramping the 1Gb chip production in July, so expect first cards in the middle of July and broad availability in August.

cheers

[Unbornchild]

did no one else notice that it appears that the card pictured has no cross fire capability?

See it now?

[Papu]

See it now?

Tri CF \0/

[NapalmV5]

yes, 4 gpus in afr mode with each 512mb have only have 512mb for texture caching. Thats one of the reasons why you see quad sli failing (2xgx2) while 280gtx still can output a picture that seems to move and not only show less then 1fps.

Erm, yes. You have the same data at the same time in the four cards.

Your avatar is ironic after reading you, remember we are not in the Voodoo days

Good lord. Someone could punch you in the face and you wouldn't notice.

no different than voodoo days..

V5 = 2xcores/2x32MB 32MB texture caching

"yes correct" @ 512MB texture caching

and im talking rendering..

gpu/512MB - 100%
2xgpu/2x512MB - 2x50%
4xgpu/4x512MB - 4x25%


great discussion guys

everything u guys/i say: deja vu over and over the last 10 years..

[STaRGaZeR]

OK now you were talking about rendering... sure.

V5 = 2xcores/2x32MB 32MB texture caching

That is what we are saying dude.

You win

[generics_user]

lol so you too want to argue/oppose me..

im talking single 512MB

2 x 512MB is not same

frame buffer is mirrored, you still have the same as with 1 card....

[trt740]

I read the recommended price of the 4870 is gonna be 349.99 can anyone confirm this?

[NapalmV5]

OK now you were talking about rendering... sure.



That is what we are saying dude.

You win

yay!

u sure didnt read the whole post

its all there

[jVIDIA]

A stupid question .... if DDR5 is not cheap then, why ATI didn't launch the 4870 with 1GB of DDR3 ?

[kryptobs2000]

So what's the consensus here? if I'm going to be keeping this card for about 6-9 months should I just get the 512mb variant or wait for the 1gb? I play at 1920x1200 btw.

[Shintai]

A stupid question .... if DDR5 is not cheap then, why ATI didn't launch the 4870 with 1GB of DDR3 ?

Performance

[Helmore]

So what's the consensus here? if I'm going to be keeping this card for about 6-9 months should I just get the 512mb variant or wait for the 1gb? I play at 1920x1200 btw.

You will be fine with the 512MB variant, at least that's what all tests with a 512MB 3870 vs. a 1GB 3870 so far show. I'm just assuming that this will be the same for a 48x0. This is different on a 9800GTX though, there you would be better off to get a 1GB version over a 512MB version as is is not as efficient in memory handling.

[OCam]

Silly Question...

Will physX still be supported in a software (x86, x64 cpu) mode? If so what is the big deal? There's alot of people running quad core cpu's with nothing running on 2 cores when gaming.

[Xoulz]

This thread is hopeless...

Within a few eeks there will be 512mb and 1gig versions of both the HD4850 & HD4870. I fail to see why people are complaining.

As to the benefits of 512 or 1024... that depends on your resolution and the games texture cache. Both points are moot because this card will be offered in both forms, possible even with something in between..

So why all the whining?

[STaRGaZeR]

Both points are moot because this card will be offered in both forms, possible even with something in between..

[Hornet331]

thers nothing "in between" :p

its either 512mb or 1024mb...

[perkam]

1GB might be $329-$349, but the 512MB price is $299.

Perkam

[Luka_Aveiro]

Silly Question...

Will physX still be supported in a software (x86, x64 cpu) mode? If so what is the big deal? There's alot of people running quad core cpu's with nothing running on 2 cores when gaming.

Yeah, but have you seen PhysX on a GPU yet? I don't think so...

[STaRGaZeR]

Yeah, but have you seen PhysX on a GPU yet? I don't think so...

Yes, in Cellfactor. With all the effects enabled the max you can get is 1-2 FPS, and with image corruption

[xlink]

View Post
a 512,000,000 bit bus is pointless at this time and far too costly.

same was said about 128 -> 256-> now 512 and so will @ 1024

I was poking fun at him saying 512 MEGA bit interface.

I highly doubt any of us will see a day where 512,000,000 bit interfaces are used... that's 1,000,000 times the bus width we use today and the demand for wider buses isn't nearly as great as the demand for faster ICs and it's easier to get a chip running faster than it is to increase board complexity... I wouldn't be surprised to see a 2k or even a 16k interface within my life but a 512M isn't happening.

[71 (Bryan)]

Holy cow, 12 watts on the fan alone, 1A :O

[biohead]

Holy cow, 12 watts on the fan alone, 1A :O

That reminds me:

[biohead]

I was poking fun at him saying 512 MEGA bit interface.

I highly doubt any of us will see a day where 512,000,000 bit interfaces are used... that's 1,000,000 times the bus width we use today and the demand for wider buses isn't nearly as great as the demand for faster ICs and it's easier to get a chip running faster than it is to increase board complexity... I wouldn't be surprised to see a 2k or even a 16k interface within my life but a 512M isn't happening.

²log(512*10^6) = 28.93.
2^28 = 268435456
2^29 = 536870912

512,000,000 phantom megabitz!!!

[initialised]

did no one else notice that it appears that the card pictured has no cross fire capability?

I believe that they are hidden behind the RAM/VRM heat spreader.

[Papu]

Yes, in Cellfactor. With all the effects enabled the max you can get is 1-2 FPS, and with image corruption

lol i could play that game fine on a 3.0ghz C2d and an ati 2900 , cant remember the settings but the game sucks , the only cool thing was throwing 100+ boxes around at people XD