Comparison of Radeon HD 6990 and GeForce GTX 780 Ti

Attribute	GeForce GTX 780 Ti ×	Radeon HD 6990 ×
GPU
Release year (year)	2013	2011
Reference card	-	AMD Radeon HD 6990 830 MHz 4 GB
GPU brand	Nvidia	AMD
GPU name	GK110B	Antilles
Market	Desktop	Desktop
Clock speed (MHz)	875	830
Turbo clock speed (MHz)	1,020	-
Is dual GPU	-	+
Model	GeForce GTX 780 Ti	Radeon HD 6990
Memory
Memory (MB)	3,072	4,096
Memory bandwidth (GB/s)	336	320
Memory bus (bit)	384	512
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,752	1,250
Effective memory clock speed (MHz)	7,000	5,000
Noise and power
TDP (W)	250	375
Load power consumption (W)	372	545
Idle power consumption (W)	80	140
Load noise level (dB)	51.7	66
Idle noise level (dB)	38.6	45.5
Raw performance
Pixel rate (GPixel/s)	52.5	53.12
SMX units	15	-
Render output processors	48	64
Texture mapping units	240	192
Shading units	2,880	3,072
Floating-point performance (GFLOPS)	5,040	5,100
Compute units	-	48
Texture rate (GTexel/s)	210	159.4
Benchmarks
Cloud Gate Factor	-	21.43
Battlefield 4	85.4	-
Face detection (mPixels/s)	75.43	17.28
T-Rex (GFXBench 3.0)	3358.32	3356.28
Manhattan (GFXBench 3.0)	3713.92	3713.7
Bitcoin mining (mHash/s)	182.11	265.3
Sky Diver Factor	430.39	340.31
Thief	76.8	-
Fire Strike Factor	74.6	45.35
Ocean surface simulation (frames/s)	-	840.45