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Graphics Card Memory "efficient"


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#1 jmoyet

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Posted 03 June 2008 - 07:33 AM

I have an upgraded eMachines W3502 the specs are:

Intel Pentium 4 3Ghz, 800Mhz FBS, L2 2MB (631)

1GB Ram (512+512) PC3200 (200Mhz)

MSI ATI HD 2600XT 512MB GDDR3 DX10 (DX9 XP) GPU: 800Mhz, MEM 700Mhz (efficient 1400Mhz)

Windows XP Home Edition SP3 32Bit

same factory motherboard...

So my question is what do they mean by "efficient 1400Mhz" when it only has 700Mhz....?

And how do i get those extra 700Mhz that I'm not getting to make 1400Mhz.....?

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#2 Platypus

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Posted 03 June 2008 - 08:04 AM

I suspect you mean effective 1400MHz

The memory is DDR memory - DDR is "double clocked". Single data rate memory transfers once for each clock cycle, if your card with 700MHz clock had single data rate graphics RAM, data would be clocked 700 million times per second. Having DDR RAM, it is clocked twice each clock cycle - 1400 million times per second. This is frequently referred to as effective 1400 MHz.

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#3 jmoyet

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Posted 03 June 2008 - 08:48 AM

I suspect you mean effective 1400MHz

The memory is DDR memory - DDR is "double clocked". Single data rate memory transfers once for each clock cycle, if your card with 700MHz clock had single data rate graphics RAM, data would be clocked 700 million times per second. Having DDR RAM, it is clocked twice each clock cycle - 1400 million times per second. This is frequently referred to as effective 1400 MHz.


Ah ok.

Thanks :flowers: now i know what they mean by effective 1400Mhz :thumbsup:




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