Welderguy24

The only games I own are, GTA V Flight Simulator FSX Steam X-Plane 10 American Truck Simulator Farm Simulator 2015 Also, why is my GPU2 (Sapphire Card) Core Clock dropping out so much during the Unigine benchmark?

Crossfire is enabled in Catalyst and working correctly (can make logo appear on screen when option is turned on). I also just updated all drivers and clocked both cards to 1000 MHz with Catalyst Overdrive tool. Unigine Heaven Benchmarks 4800x900 1600x900

I'm not really a "Hardcore" gamer, however I do play GTA V, FSX, and X-Plane 10 quite a bit and really like using Eyefinity on my 3 monitors. I recently decided to upgrade my video card to handle the large resolution better. I picked up an EVGA GTX 970, but I could not get surround to work with my resolution, so I sold that card on eBay and decided to crossfire my current card. The problem with that is the MSI R9 280 that I am currently running is out of stock everywhere. After some research I learned as long as the cards are the same design, that it should work fine. Off to eBay again, and picked up a used Sapphire R9 280 3GB Dual X. Got everything installed and up and working, however I am having a few issues. (1) In order to drive all 3 of my monitors, they all have to be plugged in to my primary card (MSI). When moving one monitor to the Sapphire card I can not get that monitor to work at all. So currently all 3 screens are run off of the MSI card, (One DVI and two DP using adapter cables to DVI inputs on monitors). Also, (2) I noticed the BIOS versions and clock speeds are different between the two cards. GTA V Benchmarks were: MSI 4800x900 - 34-40 FPS MSI 1600x900 - 57-60 FPS CrossFire 1600x900 - 47-56 FPS I understand this setup may not be ideal (and I know I'm pushing my power supply to the max), however I maybe only game about 15% of the time with this rig. This unit is primarily used for Chrome, Youtube, Quickbooks, Office, Photoshop, and Ableton Live 9. I'm not expecting 60 to 100 FPS at 4800x900 but was hoping that adding a second card would help out some. Any ways to fix this issue, Drivers, Bios re-flash? Any help would be great. Thanks. And I switched the Sapphire card to the UEFI BIOS via the switch on the card after these screen shots were taken, still no change though. Setup: Core i5 4690k (No OC - Yet) Intel BXTS13X Liquid CPU Cooler Gigabyte GA-Z97X-UD3H-BK Mobo 16 GB DDR3-1600 MSI Radeon R9 280 3GB Twin Frozr Sapphire R9 280 3GB Dual X Corsair CXM 750W 80+ NZXT Source 220 Case Win 7 64 bit 3x Acer X203H Monitors at 1600x900 (4800x900 Eyefinity)