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 R9 M295X
CORE STATE
Amethyst
VRAM
4 GB
CLOCK SPEED
—
TDP
250 W
BUS WIDTH
256 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
R9 M295X
Core Specs
Shading Units
960
2,048
+113.3%
Shaders
960
2,048
+113.3%
TMUs
48
128
+166.7%
ROPs
32
32
0.0%
Compute Units
12
32
+166.7%
Clocks
GPU Clock
800 MHz
723 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
1250 MHz
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
256 bit
Bandwidth
134.4 GB/s
160.0 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Performance
Pixel Rate
25.60 GPixel/s
23.14 GPixel/s
Texture Rate
38.40 GTexel/s
92.54 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
2.961 TFLOPS
FP64 (TFLOPS)
—
185.1 GFLOPS (1:16)
FP16 (TFLOPS)
—
2.961 TFLOPS (1:1)
Power
TDP
254 W
250 W
TDP (W)
254
250
-1.6%
Suggested PSU
600 W
—
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
GCN 3.0
GPU Name
Barts
Amethyst
Generation
Northern Islands
(HD 6800)
Gem System
(R9 M200)
Process Size
40 nm
28 nm
Transistors
1,700 million
5,000 million
Die Size
255 mm²
366 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
13.7M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
Vulkan
—
1.2.170
OpenCL
1.2
2.1
Shader Model
5.0
6.5
Physical
Slot Width
Dual-slot
MXM Module
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Portable Device Dependent
Bus Interface
PCIe 2.0 x16
MXM-B (3.0)
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
Solar System
Successor
Southern Islands
Polaris Mobile