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evga gtx 590 = confused ?

post #1 of 4
6/26/12 at 11:50am
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hey guys i just bought an evga geforce gtx 590 classified..and i dont get it? says memory bandwidth : 331.7GB/sec ..when i check gpu-z it says memory bandwitdh : 165.3 GB/sec...im new to video cards..will i get full 331 GB/sec band width, how ? do u gotta run it in sli..is this card actually good. or should i go with an ati hd 7970.? which 1 of these cards should i go with..any help is greatly appreciated..thanks guys....also i do a lilbit of gaming and both these cards are prolly way more then what i need , but i got um and need ur help, too help me which 1 would perform better. imnn all cases.. gaming , blu-ray playback ,movie converting ect ect. thks again biggrin.gifthumb.gif







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post #2 of 4
6/26/12 at 11:54am
It is from your motherboard. I guess you only have a 2 PCIe slots mobo. Instead of the card working on a full 16x port, because of the "internal SLI" of the card, you're only getting 8x speed.

The 7970 is a single gpu card, so it will run on a full 16x bandwith, but it will not really benefit from it because it doesn't have the horsepower needed.

It all comes down to your needs.
Edited by deienache - 6/26/12 at 11:56am
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post #3 of 4
6/26/12 at 4:38pm
Actually its because the memory bandwidth is derived from the memory bit... 256bit.

In product specs the memory bit is multiplied by 2, because 2x GPU's. 512bit.

GPU-Z reads each GPU individually, so it only sees a 256bit GPU.
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post #4 of 4
6/26/12 at 11:20pm
No offense but if you're this inexperienced with graphics cards to be asking these questions, and can get a 7970 for a similar price ... I'd probably get that if I were you. Single GPU systems are a lot less complicated to operate thumb.gif

Also, Jacob's is the right answer. GPU-Z sees a 590 as though it were two separate cards, running in SLI. Which ... is basically exactly what it is. Only both 'cards' are on one board. You actually have two cards, each with 1.5GB of vram and 165GB/s bandwidth, not one 'card' with 3GB of vram and 330MB/s bandwidth. Dual GPU card marketing is pretty deceptive is the truth.

Although I'm pretty sure that each of those two cards has a wider bus than 256-bit ... I think Jacob's thinking of a 690 wink.gif
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