Listing error of 8800 GTS 512 Memory Clock Speed?

[nevynev]

Hi guys,

Is this a listing error: "Memory Clock Speed 970 Mhz" - shouldn't it be 1940 mhz? a 970 mhz GTS 512 doesnt exist surely?

http://www.dabs.com/productview.aspx?Quicklinx=4TVZ&SearchType=1&SearchTerms=8800+gts+evga&PageMode=3&SearchKey=All&SearchMode=All&NavigationKey=0

Looking to buy this card from that site (cos I have money in my PayPal account for it).

Thanks
NevyNev

 

[Slobogob]

Probably the listed the Mhz speed wich would be equal to the 1940 "Mhz" the marketing people refer to. Still, i would check the manufacturers website to be sure. I've seen too many cards crippled by slow memory. The most horrible ones seem to be the 2600 or 8600 cards that come equipped with DDR2 RAM (as much as 1024 Mebibyte).

 

[bdcrlsn]

I've seen this question many times.

Both 970 Mhz and 1940 Mhz are correct. Some people/websites like to say the memory runs at the higher speed because it looks more impressive. The memory technically runs at 970 Mhz, but because it's DDR memory, the 970 Mhz runs on both the rise and fall of the clock signal, thus the 1940 Mhz. (Multiplies the 970 Mhz by 2) If I'm wrong, you can correct me, but I think that's how it works.

 

[night_wolf_in]

^ what u said seems right.

they gave u the speed for single channel. and in DDR, it is double rate. so multiply with 2.

watever it is, check the manufacturer's website to know what you buying. n compared it to the reference design.

 

[Pinhedd]

The correct notation is 970Mhz (cycles per second) or 1940MT/s (million transfers per second, or two transfers per clock)

 

[leo2kp]

Yes, DDR is always 2x the actual clock speed. What you're expecting is the "effective" speed, which for you is 970x2=1940MHz. The same goes for PC RAM. DDR2-800 is clocked at 400MHz but has an effective speed of 800MHz (thus the 800) because it's "DOUBLE Data Rate".