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
GEFORCE
GeForce GTS 450
CORE STATE
GF106
VRAM
1024 MB
CLOCK SPEED
—
TDP
106 W
BUS WIDTH
128 bit
ARCHITECTURE
Fermi
PROCESS
40 nm
LAUNCH DATE
2010
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
GTS 450
Core Specs
Shading Units
960
192
-80.0%
Shaders
960
192
-80.0%
TMUs
48
32
-33.3%
ROPs
32
16
-50.0%
Compute Units
12
—
SM Count
—
4
Clocks
GPU Clock
800 MHz
783 MHz
Shader Clock
—
1566 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
902 MHz
3.6 Gbps effective
Memory
Memory Size
2 GB
1024 MB
VRAM (MB)
2,048
1,024
-50.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
128 bit
Bandwidth
134.4 GB/s
57.73 GB/s
Cache
L1 Cache
8 KB (per CU)
64 KB (per SM)
L2 Cache
512 KB
256 KB
Performance
Pixel Rate
25.60 GPixel/s
6.264 GPixel/s
Texture Rate
38.40 GTexel/s
25.06 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
601.3 GFLOPS
FP64 (TFLOPS)
—
50.11 GFLOPS (1:12)
Power
TDP
254 W
106 W
TDP (W)
254
106
-58.3%
Suggested PSU
600 W
300 W
Power Connectors
2x 8-pin
1x 6-pin
Architecture
Architecture
TeraScale 2
Fermi
GPU Name
Barts
GF106
Generation
Northern Islands
(HD 6800)
GeForce 400
Process Size
40 nm
40 nm
Transistors
1,700 million
1,170 million
Die Size
255 mm²
238 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
4.9M / mm²
API Support
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
OpenCL
1.2
1.1
CUDA
—
2.1
Shader Model
5.0
5.1
Physical
Slot Width
Dual-slot
Dual-slot
Length
—
210 mm
8.3 inches
Height
—
111 mm
4.4 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
2x DVI1x mini-HDMI 1.3a
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
Other
Launch Price
—
129 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
GeForce 200
Successor
Southern Islands
GeForce 500