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post #11 of 21
a 5970 is not 2x 5870's. they have the same stream processors thats about it. the bus is smaller, gpus, shaders, and mem are clocked slower.
    
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post #12 of 21
Thread Starter 
from what iv seen the 5970 is just 2 5870s down clocked and when you overclock them to 5870 specs you basicly got 2 5870s on one card.
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post #13 of 21
they have a smaller bus, and higher latency mem chips. so they dont clock as well. compare the specs to a 5870X2 and you'll see the difference. believe me i did a lot of reading on these guys.
    
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post #14 of 21
Thread Starter 
lol i musta got lucky then mine does 1200 no problem and the info i found said memory bus 256bitx2 like a 5870.

http://www.overclock.net/ati/792996-...970-worth.html
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post #15 of 21
Quote:
Originally Posted by DarkRyder View Post
they have a smaller bus, and higher latency mem chips. so they dont clock as well. compare the specs to a 5870X2 and you'll see the difference. believe me i did a lot of reading on these guys.
Bus is definitely same width.
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post #16 of 21
Quote:
Originally Posted by DarkRyder View Post
they have a smaller bus, and higher latency mem chips. so they dont clock as well. compare the specs to a 5870X2 and you'll see the difference. believe me i did a lot of reading on these guys.
Higher Latency chips on the memory? Can you show us how you can find GPU ram latencies

As for the bus, I consider you to read this as the source you read may not have been correct: http://en.wikipedia.org/wiki/Compari...ergreen_series
Note that the bus for 5970 2x256MB GDDR5 and the bus for 5870 is 256MB GDDR5
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post #17 of 21
my bad, the bus is the same, its the clocks that are lower and they use weaker vrms.

While the dual-GPU Radeon HD 5970 uses full-featured AMD Cypress GPUs (with all its stream processors and memory bus width available), ASUS will attempt to use the one disparity between an HD 5970 and two HD 5870 to its advantage: clock speeds. The Cypress GPUs in HD 5970 feature lower clock speeds (725/1000 MHz core/memory) compared to the single Cypress GPU on the HD 5870 (850/1200 MHz). Electrical constraints are probably the reason behind this. It is likely that ASUS will use stronger VRM circuitry to power the two GPUs to run at higher speeds, while also providing some overclocking headroom.
    
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post #18 of 21
Quote:
Originally Posted by gamer11200 View Post
Higher Latency chips on the memory? Can you show us how you can find GPU ram latencies

As for the bus, I consider you to read this as the source you read may not have been correct: http://en.wikipedia.org/wiki/Compari...ergreen_series
Note that the bus for 5970 2x256bit and the bus for 5870 is 256bit
-Fixed
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post #19 of 21
Thread Starter 
Quote:
Originally Posted by DarkRyder View Post
my bad, the bus is the same, its the clocks that are lower and they use weaker vrms.

While the dual-GPU Radeon HD 5970 uses full-featured AMD Cypress GPUs (with all its stream processors and memory bus width available), ASUS will attempt to use the one disparity between an HD 5970 and two HD 5870 to its advantage: clock speeds. The Cypress GPUs in HD 5970 feature lower clock speeds (725/1000 MHz core/memory) compared to the single Cypress GPU on the HD 5870 (850/1200 MHz). Electrical constraints are probably the reason behind this. It is likely that ASUS will use stronger VRM circuitry to power the two GPUs to run at higher speeds, while also providing some overclocking headroom.
So really only differnce is clock speed and vrms asus probly used better ones that run cooler and provide cleaner power to let users hit 1000mhz on the cards.
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post #20 of 21
they used stronger vrms to make it more like 2x 5870's, and not more like 5850's with extra stream processors.
    
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