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[HKEPC] ATI 4870 benched? - Page 3

post #21 of 31
Quote:
Originally Posted by RussianGrimmReaper View Post
Let me clear up a little confusion first off.
R600 had 320SPs, 16 TMUs and was limited to GDDR4 and GDDR3.
R700 has 800SPs, 40 TMUs and is limited to GDDR3, and GDDR5.
Mostly similar, but all those extra SPs need to be put to work! The only thing that will help that is drivers, which ATI has always been poor when releasing cards initially.
Actually, it's R770 that has 800 SPs. R700 is the dual card variant of R770 so technically it has 1600SPs and 80TMUs.
post #22 of 31
Quote:
Originally Posted by darkcloud89 View Post
Actually, it's R770 that has 800 SPs. R700 is the dual card variant of R770 so technically it has 1600SPs and 80TMUs.
Don't argue specifics! RV770 has 800 SPs; R600, RV670 and RV680 have 320SPs. They MORE THAN DOUBLED the amount of SPs!!! You need good drivers to use all of that!
post #23 of 31
Thread Starter 
Quote:
Originally Posted by RussianGrimmReaper View Post
Let me clear up a little confusion first off.
R600 had 320SPs, 16 TMUs and was limited to GDDR4 and GDDR3.
R700 has 800SPs, 40 TMUs and is limited to GDDR3, and GDDR5.
Mostly similar, but all those extra SPs need to be put to work! The only thing that will help that is drivers, which ATI has always been poor when releasing cards initially.
No confusion, at least not on my part... Like I said, the uarchs are very similar and are all about scalability. Look at the ratio of SP:TMUs if you don't believe or understand what I'm trying to say:

320:16 -> 20:1
800:40 -> 20:1

You would think that the drivers themselves would need minor tweaking when jumping from R600 -> R700; I've said in prior posts that I would love to buy a 4870 if it delivers in terms of performance(gaming), I also don't want to wait half a year for competent drivers from ATI.

-EDIT-

Slightly OT, does anyone know the warranty policies of specific AIB partners? I know of two, and would like to know if any other partners offer 3 year warranties(I usually upgrade my family member's GPUs with my old ones when I uprade, that's why I like 3+ year warranties).

Visiontek = limited lifetime
Asus = 3 years
Edited by MasterKromm - 6/22/08 at 10:48am
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post #24 of 31
In some games I notice roughly double the performance. In 3dmark06, I get the same score as my HD3870 (within 200-300).
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post #25 of 31
am i the only one who noticed the GPUz bandwith of about 57 gb/s? seems low or im just messed up...
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post #26 of 31
Quote:
Originally Posted by MasterKromm View Post
No confusion, at least not on my part... Like I said, the uarchs are very similar and are all about scalability. Look at the ratio of SP:TMUs if you don't believe or understand what I'm trying to say:

320:16 -> 20:1
800:40 -> 20:1

You would think that the drivers themselves would need minor tweaking when jumping from R600 -> R700; I've said in prior posts that I would love to buy a 4870 if it delivers in terms of performance(gaming), I also don't want to wait half a year for competent drivers from ATI.

-EDIT-

Slightly OT, does anyone know the warranty policies of specific AIB partners? I know of two, and would like to know if any other partners offer 3 year warranties(I usually upgrade my family member's GPUs with my old ones when I uprade, that's why I like 3+ year warranties).

Visiontek = limited lifetime
Asus = 3 years
Quote:
Originally Posted by Mootsfox View Post
In some games I notice roughly double the performance. In 3dmark06, I get the same score as my HD3870 (within 200-300).
Mature drivers for the 4850 should be out buy July around the time of the 4870 release.
post #27 of 31
I can confirm that 800 shader number too:

http://www.techpowerup.com/gpuz/9nmuq/
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post #28 of 31
Quote:
Originally Posted by Mootsfox View Post
I can confirm that 800 shader number too:

http://www.techpowerup.com/gpuz/9nmuq/
Technically there are 160 shaders... It takes 5(4 math 1 complex) RingBus SPs to run as a single shader.
post #29 of 31
Quote:
Originally Posted by RussianGrimmReaper View Post
Technically there are 160 shaders... It takes 5(4 math 1 complex) RingBus SPs to run as a single shader.
Right, but I remember hearing rumors of it having 480/96 shaders.
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post #30 of 31
Quote:
Originally Posted by Mootsfox View Post
Right, but I remember hearing rumors of it having 480/96 shaders.
ATI planted those rumors to confuse people as well as NVidia.
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