Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Why is memory on an MSI 4870 so high? 4000mhz??

Why is memory on an MSI 4870 so high? 4000mhz??

Forum Graphic & Displays : Graphics Cards - Why is memory on an MSI 4870 so high? 4000mhz??

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Drummer1976   02-14-2009 at 08:39:41 PM

I dont get it... every other memory clock is like 900ish. This one is 4000??? how are they making these numbers??? someone please enlighten me! Here is a link to the card in question :

http://global.msi.com.tw/index.php [...] od_no=1509

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spathotan   02-14-2009 at 08:42:04 PM
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Its GDDR5. It runs at 3.6ghz-4ghz+ on these cards. The clock speed for GDDR5 is (memory clock x 4) = speed


Message edited by spathotan on 02-14-2009 at 08:45:46 PM
------------------------------ http://valid.canardpc.com/cache/banner/547515.png
Intel Xeon X3370 @3.6ghz Under Enzotech Extreme-X,EVGA GTX 285 SC, 4GB Mushkin Ascent eVCI @ 1066mhz, Gigabyte P45 UD3P
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Drummer1976   02-14-2009 at 08:52:58 PM
- 0 +

ok i get it.... but why would all the other cards rate their memory clocks at 900? They all have gddr5, is it just that they dont multiply it by 4? I like the saphire also, its memory clock is rated at 900. I doubt that means it runs more than 4x slower than the msi... ? thnx for the reply!!

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spathotan   02-14-2009 at 08:54:14 PM
- 0 +

Its just labeled poorly. If you see a card with GDDR5 labeled at 900mhz, its running at 3.6ghz.

------------------------------ http://valid.canardpc.com/cache/banner/547515.png
Intel Xeon X3370 @3.6ghz Under Enzotech Extreme-X,EVGA GTX 285 SC, 4GB Mushkin Ascent eVCI @ 1066mhz, Gigabyte P45 UD3P
 Reply to spathotan
Drummer1976   02-14-2009 at 09:14:13 PM
- 0 +

nice. Thnx for the clarification, much appreciated!

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