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[dvHW] ATI RV770 PRO has 256-bit memory bus

post #1 of 38
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Quote:
Rumour has it that the AMD RV770XT will have a 512-bit memory interface while the slower RV770PRO will use a 256-bit one.

It looks that the current GDDR5 design sticks with 512-bit memory interface and that RV770PRO will use 256-bit GDDR3 memory. The RV770PRO will need a smaller cooler, as it is definitely going to end up the cheaper of two, and you can bet on a sub-$200 price.

RV770PRO will also end up with a slower clock than RV770XT, but we still don’t know what the current speed plan. It is sampled and it works, at least the RV770PRO with 256-bit GDDR3 does.

Edited by Marin - 5/12/08 at 5:03pm
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post #2 of 38
hopefully this is true. i really didn't cards with 256bit bus on them.
post #3 of 38
If that's true, the XT is going to have a MASSIVE bandwidth. Hope the core can use it, and not end up like the HD2900.
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post #4 of 38
Ouch. GDDR5 + 512-bit bus = huge bandwitdh. Hopefully the XT has the shader power to back it up. I also hope this doesn't mean we will be paying $600 per card ><"
post #5 of 38
Quote:
Originally Posted by NrGx View Post
Ouch. GDDR5 + 512-bit bus = huge bandwitdh. Hopefully the XT has the shader power to back it up. I also hope this doesn't mean we will be paying $600 per card ><"
Thats nevr the case with ATi. HD2900Xt had GDDR4 + 512bit at it costed 400$.
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post #6 of 38
Quote:
Originally Posted by ZealotKi11er View Post
Thats nevr the case with ATi. HD2900Xt had GDDR4 + 512bit at it costed 400$.
Yeah but now the similarly performing HD3870 is less than half that
post #7 of 38
Quote:
Originally Posted by NrGx View Post
Yeah but now the similarly performing HD3870 is less than half that
simlarly performing??
What are u on?
    
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post #8 of 38
Man I so wanna see CFX 4870X2 rape crysis and
3dmarkvantage.
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post #9 of 38
Quote:
Originally Posted by arekieh View Post
simlarly performing??
What are u on?
you're right the 3870 is faster overall.
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post #10 of 38
Quote:
Originally Posted by dieanotherday View Post
Man I so wanna see CFX 4870X2 rape crysis and
3dmarkvantage.
i think we all do. i'd be happy just to get 60-70+ FPS in crysis with one 4870x2.
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