GPU Comparison
RADEON
AMD Radeon HD 6850 X2
CORE STATE
Barts
VRAM
2 GB
CLOCK SPEED
—
TDP
254 W
BUS WIDTH
256 bit
ARCHITECTURE
TeraScale 2
PROCESS
40 nm
LAUNCH DATE
2011
VS
RADEON
Radeon HD 6950
CORE STATE
Cayman
VRAM
2 GB
CLOCK SPEED
—
TDP
200 W
BUS WIDTH
256 bit
ARCHITECTURE
TeraScale 3
PROCESS
40 nm
LAUNCH DATE
2010
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
HD 6950
Core Specs
Shading Units
960
1,408
+46.7%
Shaders
960
1,408
+46.7%
TMUs
48
88
+83.3%
ROPs
32
32
0.0%
Compute Units
12
22
+83.3%
Clocks
GPU Clock
800 MHz
800 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
1250 MHz
5 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
256 bit
Bandwidth
134.4 GB/s
160.0 GB/s
Cache
L1 Cache
8 KB (per CU)
8 KB (per CU)
L2 Cache
512 KB
512 KB
Performance
Pixel Rate
25.60 GPixel/s
25.60 GPixel/s
Texture Rate
38.40 GTexel/s
70.40 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
2.253 TFLOPS
FP64 (TFLOPS)
—
563.2 GFLOPS (1:4)
Power
TDP
254 W
200 W
TDP (W)
254
200
-21.3%
Suggested PSU
600 W
550 W
Power Connectors
2x 8-pin
2x 6-pin
Architecture
Architecture
TeraScale 2
TeraScale 3
GPU Name
Barts
Cayman
Generation
Northern Islands
(HD 6800)
Northern Islands
(HD 6900)
Process Size
40 nm
40 nm
Transistors
1,700 million
2,640 million
Die Size
255 mm²
389 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
6.8M / mm²
API Support
DirectX
11.2 (11_0)
11.2 (11_0)
OpenGL
4.4
4.4
OpenCL
1.2
1.2
Shader Model
5.0
5.0
Physical
Slot Width
Dual-slot
Dual-slot
Length
—
286 mm
11.3 inches
Height
—
126 mm
5 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
Other
Launch Price
—
299 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
Evergreen
Successor
Southern Islands
Southern Islands