有R7 250測試報告了，對照組只有GT640
http://www.hardwareheaven.com/revie...troduction.html

HIS Radeon R7 250 iCooler 1GB (1050/1150)
ASUS GeForce GT 640 SAP 2GB (902/891)

ASRock Fatality X79 Champion Motherboard
Intel Core i7-4960X @ 4.0GHz
4x 4GB Corsair Vengeance DDR3-1866
Corsair H100 Liquid Cooler
Corsair HX860i PSU
Corsair Force GT 240GB SSD
Corsair Vengeance Keyboard, Mouse and Headset

Windows 8.1 64-bit
Catalyst 13.11 Beta 1
Forceware 331.40
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光看跑分的話
R7 250 - P2067
GT640 - P1489