Hello, I ordered a R9 290-X from eBay which I now have crossfired with my 290. However, on comparing the 2 GPUs in GPU-Z, my 290 seems to have higher specs than the 290-X. 290: Spoiler 290-X: Spoiler Was I possibly sold a 290 as a 290-X? Is there any way to know for sure? Regardless, in crossfire they test well (this is with the known 290 as the primary card, as the 290-'X' takes up three slots (custom fan)): Spoiler Pretty much equivalent to the 295 x2, actually with a better graphics score (not physics): My other question is if the card is indeed a 290-X, would it improve performance to have the 290-X as the primary? Any input would be appreciated. Cheers!
Bottom is def XT - prob with quiet bios. Switch to 2nd position and see. Pro version might've been OC'd via bios mod.
This is my 7950 modded using V7 BIOS editor. Best app ever for GCN cards, dunno what happened to the dev he just disappeared.
Both cards are reading fine.290 and 290x R9 290 has 2560 shaders R9 290X has 2816 shaders They should work fine together. DO up a 3d Mark 2013 run and post it here.Lets see what ya get. EDIT:I pretty much gave up on benching R9 290 cards just because there so good.I know what they do and its always the same. If you want something to look at GPU score 26288 try to beat it. R9 290 Crossfire run. http://www.3dmark.com/3dm/2833578
First card is most likely a 290 Winforce 3x OC edition as it has the same specs as mine. 1040 MHz is the default factory clock for it. The second card also looks OK, the shader count indicates a 290x. AFAIK AMD recommends performance mode for CrossfireX so make sure the 290 uses the Performance BIOS. See this: http://www.gigabyte.eu/products/product-page.aspx?pid=4884#ov Another good test (if you have it) is BF4 with Mantle renderer, it should scale really well, use console commands to see if both GPUs are used and the CPU/GPU latency graph to see it is working smooth.
Thanks for all the input everyone! Thanks dude, it definitely is the Windforce 3xOC card, it looks exactly the same. When you refer to the performance bios, are you talking about the hardware switch on the card being moved to the left? Or should I also update the card's bios to the latest edition? I do have BF4, I'll give it a try, thanks!
"My other question is if the card is indeed a 290-X, would it improve performance to have the 290-X as the primary?" IMO no, you effectively have two 290's when you run in CFX. See how 3DMark reports you having two 290's.
Yes, make sure to have the BIOS selection switch towards the back bracket in order for the card to use a more aggressive fan/core clock profile. The quiet BIOS has more throttling while the performance one has less (obviously). This ensures less stuttering in CrossfireX. I upgraded both BIOSes to the latest F21 version, the only thing I noticed was the restored fan control since F4, I did not have any stability issues.
Ah, my bad, I looked at the screenshot by gerardfraser... still, the point remains valid, as Pill Monster pointed out ^
I don't think this is correct; I have heard this is the case for SLI, however I have measured and logged my GPU's while gaming, and their memory and core clocks are different. In fact at default settings, the 290 has a higher core clock than the 290x. I've overclocked the x to 1140 / 1450 (core / mem) and it stays at this clock while the 290 is at 1040/1200 (Mhz).