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 GTX 850M
CORE STATE
GM107
VRAM
2 GB
CLOCK SPEED
—
TDP
45 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
GTX 850M
Core Specs
Shading Units
960
640
-33.3%
Shaders
960
640
-33.3%
TMUs
48
40
-16.7%
ROPs
32
16
-50.0%
Compute Units
12
—
Clocks
GPU Clock
800 MHz
902 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
1001 MHz
2 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
DDR3
Memory Bus
256 bit
128 bit
Bandwidth
134.4 GB/s
32.03 GB/s
Cache
L1 Cache
8 KB (per CU)
64 KB (per SMM)
L2 Cache
512 KB
2 MB
Performance
Pixel Rate
25.60 GPixel/s
14.43 GPixel/s
Texture Rate
38.40 GTexel/s
36.08 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
1,154.6 GFLOPS
FP64 (TFLOPS)
—
36.08 GFLOPS (1:32)
Power
TDP
254 W
45 W
TDP (W)
254
45
-82.3%
Suggested PSU
600 W
—
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
Maxwell
GPU Name
Barts
GM107
Generation
Northern Islands
(HD 6800)
GeForce 800M
Process Size
40 nm
28 nm
Transistors
1,700 million
1,870 million
Die Size
255 mm²
148 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
12.6M / mm²
API Support
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
Vulkan
—
1.4
OpenCL
1.2
3.0
CUDA
—
5.0
Shader Model
5.0
6.7 (5.1)
Physical
Slot Width
Dual-slot
IGP
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Portable Device Dependent
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
GeForce 700M
Successor
Southern Islands
GeForce 900M