Solved Should I upgrade my graphics card or run Cross Fire?

February 17, 2014 at 07:19:12
Specs: Windows 8.1, AMD FX-8150/16GB RAM
I own a CyberPowerPC model GU6025 with a GA-970A-D3 motherboard, 16 GB DDR3 RAM 1333MHz, AMD FX8150 CPU 3.8 GHz, a AMD Radeon HD 7870 graphics card with 2 GB of GDDR5 (made by Gigabyte), and 800 watt power supply. Should I upgrade my existing graphics to a newer one with 4GB GDDR5 (and if so what) or buy a second Radeon HD 7870?

See More: Should I upgrade my graphics card or run Cross Fire?

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February 17, 2014 at 08:23:03
If you're into gaming, you'll get much higher frame-rates with two cards running crossfire, compared to a single card and no crossfire.

message edited by phil22

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February 17, 2014 at 13:53:33
✔ Best Answer
Yes, and buying a great new graphics card that would match the performance of two Radeon 7870s would cost about twice the price of just buying another. (Approx. $250 for 7870, vs the R9 290 @ approx. $550)

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February 17, 2014 at 16:01:47
I am not a gamer but the motherboard capabilities have a lot to do with the performance.

In your case your motherboard can run two cards at 16x. The board is PCI 2.0 standard though. Your graphics card is PCI 3.0. I believe for best compatibility you should run identical cards in crossfire. Can you get another identical card?

Installing a second card requires more power. According to the specs on your computer you have an 800W PSU. Post the brand and model, or the information on the amps on the +12v rail and if there are more than one of them.

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February 17, 2014 at 20:02:45
As OtheHill pointed out, the PCI-e slots are 2.0 rather than 3.0, but one runs at x16 & the other at x4. Not a great board for running crossfire.

"1.Support for AMD CrossFireX™ technology (PCIEX16 and PCIEX4)"

And why are you running DDR3-1333 rather than DDR3-1866? The slow RAM is a bottleneck.

"Should I upgrade my existing graphics to a newer one with 4GB GDDR5"

More graphics memory doesn't necessarily mean better performance. There are plenty of low end cards out there with 2GB, 3GB or 4GB memory & they aren't any faster than the same card with just 1GB memory. Make sure to consider ALL the specs, memory amount is just one of them & shouldn't be the primary consideration.

message edited by riider

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February 18, 2014 at 06:58:28
Actually what I stated was the board can run 2 cards at 16x but only PCI 2.0 speeds. See the link below for board specs.

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February 18, 2014 at 08:54:59
My computer came with DDR3-1333. Can you recommend any particular DDR3-1866?

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February 18, 2014 at 13:33:26
Really, using PCIe 2.0 vs 3.0 won't affect your performance by a noticeable amount (~5%). Most graphics cards can't use most of the bandwidth provided by PCIe 3.0.

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