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Old 06-11-2010, 12:56 PM   #8
Jmac
Willing to sell body for a few minutes on RS
 
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Quote:
Originally Posted by asdfpic View Post
yeah the main thing i saw was the way bigger amount of dedicated memory, but what threw me off was the memorcy clock and memory bandwidth

BFG:
Memory Clock 1450MHz (vs. 1400MHz standard)
Memory Bandwidth 23.2GB/sec.

ATI:
Memory Clock : 800 MHz
Memory Bandwidth : 8 GB/sec

haha anyway, thanks everyone
The ATI Memory Bandwidth makes no sense ...

The 4650 should use a 128-bit bus which, at 800 MHz, would give a Memory bandwidth of:

800*(128/8) = 12800 MB/s (12.8 GB/s)

Even if, for some bizarre reason, the manufacturer opted to use a 64-bit memory bus, the memory bandwidth would be:

800*(64/8) = 6400 MB/s (6.4 GB/s)

8 GB/s w/ 800 MHz memory would be impossible ...
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