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
Tesla M4
CORE STATE
GM206
VRAM
4 GB
CLOCK SPEED
1072 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell 2.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
Tesla M4
Core Specs
Shading Units
960
1,024
+6.7%
Shaders
960
1,024
+6.7%
TMUs
48
64
+33.3%
ROPs
32
32
0.0%
Compute Units
12
—
Clocks
Base Clock
—
872 MHz
Boost Clock
—
1072 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
1375 MHz
5.5 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
128 bit
Bandwidth
134.4 GB/s
88.00 GB/s
Cache
L1 Cache
8 KB (per CU)
48 KB (per SMM)
L2 Cache
512 KB
1024 KB
Performance
Pixel Rate
25.60 GPixel/s
34.30 GPixel/s
Texture Rate
38.40 GTexel/s
68.61 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
2.195 TFLOPS
FP64 (TFLOPS)
—
68.61 GFLOPS (1:32)
Power
TDP
254 W
50 W
TDP (W)
254
50
-80.3%
Suggested PSU
600 W
250 W
Power Connectors
2x 8-pin
—
Architecture
Architecture
TeraScale 2
Maxwell 2.0
GPU Name
Barts
GM206
Generation
Northern Islands
(HD 6800)
Tesla Maxwell
(Mxx)
Process Size
40 nm
28 nm
Transistors
1,700 million
2,940 million
Die Size
255 mm²
228 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
12.9M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_1)
OpenGL
4.4
4.6
Vulkan
—
1.4
OpenCL
1.2
3.0
CUDA
—
5.2
Shader Model
5.0
6.8
Physical
Slot Width
Dual-slot
Single-slot
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
No outputs
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
Tesla Kepler
Successor
Southern Islands
Tesla Pascal