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 HD 7790
CORE STATE
Bonaire
VRAM
1024 MB
CLOCK SPEED
—
TDP
85 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 2.0
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
HD 7790
Core Specs
Shading Units
960
896
-6.7%
Shaders
960
896
-6.7%
TMUs
48
56
+16.7%
ROPs
32
16
-50.0%
Compute Units
12
14
+16.7%
Clocks
GPU Clock
800 MHz
1000 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
1500 MHz
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
96.00 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
16.00 GPixel/s
Texture Rate
38.40 GTexel/s
56.00 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
1.792 TFLOPS
FP64 (TFLOPS)
—
112.0 GFLOPS (1:16)
Power
TDP
254 W
85 W
TDP (W)
254
85
-66.5%
Suggested PSU
600 W
250 W
Power Connectors
2x 8-pin
1x 6-pin
Architecture
Architecture
TeraScale 2
GCN 2.0
GPU Name
Barts
Bonaire
Generation
Northern Islands
(HD 6800)
Southern Islands
(HD 7700)
Process Size
40 nm
28 nm
Transistors
1,700 million
2,080 million
Die Size
255 mm²
160 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
13.0M / 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
Dual-slot
Length
—
183 mm
7.2 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Other
Launch Price
—
149 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
Northern Islands
Successor
Southern Islands
Sea Islands