GPU Comparison

AMD
RADEON

AMD Radeon HD 6850 X2

CORE STATE Barts
VRAM 2 GB
CLOCK SPEED
TDP 254 W
BUS WIDTH 256 bit
ARCHITECTURE TeraScale 2
nm
PROCESS 40 nm
LAUNCH DATE 2011
VS
AMD
RADEON

Radeon HD 8790M

CORE STATE Mars
VRAM 2 GB
CLOCK SPEED 900 MHz
TDP
BUS WIDTH 128 bit
ARCHITECTURE GCN 1.0
nm
PROCESS 28 nm
LAUNCH DATE 2013

PERFORMANCE BENCHMARKS

geekbench_opencl
3,977
5,073
geekbench_vulkan
N/A
5,839

DETAILED SPECIFICATIONS

SPECIFICATION
HD 6850 X2
HD 8790M
Core Specs
Shading Units
960
384 -60.0%
Shaders
960
384 -60.0%
TMUs
48
24 -50.0%
ROPs
32
8 -75.0%
Compute Units
12
6 -50.0%
Clocks
Base Clock
850 MHz
Boost Clock
900 MHz
GPU Clock
800 MHz
Memory Clock
1050 MHz 4.2 Gbps effective
1000 MHz 4 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
128 bit
Bandwidth
134.4 GB/s
64.00 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
256 KB
Performance
Pixel Rate
25.60 GPixel/s
7.200 GPixel/s
Texture Rate
38.40 GTexel/s
21.60 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
691.2 GFLOPS
FP64 (TFLOPS)
43.20 GFLOPS (1:16)
Power
TDP
254 W
TDP (W)
254
Suggested PSU
600 W
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
GCN 1.0
GPU Name
Barts
Mars
Generation
Northern Islands (HD 6800)
Solar System (HD 8700M)
Process Size
40 nm
28 nm
Transistors
1,700 million
950 million
Die Size
255 mm²
77 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
12.3M / mm²
API Support
DirectX
11.2 (11_0)
12 (11_1)
OpenGL
4.4
4.6
Vulkan
1.2.170
OpenCL
1.2
2.1 (1.2)
Shader Model
5.0
6.5 (5.1)
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-A (3.0)
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
London
Successor
Southern Islands
Gem System
View Radeon HD 6850 X2 Details View Radeon HD 8790M Details