GPU Comparison
RADEON
AMD Radeon HD 6770
CORE STATE
Juniper
VRAM
1024 MB
CLOCK SPEED
—
TDP
108 W
BUS WIDTH
128 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 6770
HD 7790
Core Specs
Shading Units
800
896
+12.0%
Shaders
800
896
+12.0%
TMUs
40
56
+40.0%
ROPs
16
16
0.0%
Compute Units
10
14
+40.0%
Clocks
GPU Clock
850 MHz
1000 MHz
Memory Clock
1200 MHz
4.8 Gbps effective
1500 MHz
6 Gbps effective
Memory
Memory Size
1024 MB
1024 MB
VRAM (MB)
1,024
1,024
0.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
76.80 GB/s
96.00 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
256 KB
Performance
Pixel Rate
13.60 GPixel/s
16.00 GPixel/s
Texture Rate
34.00 GTexel/s
56.00 GTexel/s
FP32 (TFLOPS)
1,360.0 GFLOPS
1.792 TFLOPS
FP64 (TFLOPS)
—
112.0 GFLOPS (1:16)
Power
TDP
108 W
85 W
TDP (W)
108
85
-21.3%
Suggested PSU
300 W
250 W
Power Connectors
1x 6-pin
1x 6-pin
Architecture
Architecture
TeraScale 2
GCN 2.0
GPU Name
Juniper
Bonaire
Generation
Northern Islands
(HD 6700)
Southern Islands
(HD 7700)
Process Size
40 nm
28 nm
Transistors
1,040 million
2,080 million
Die Size
166 mm²
160 mm²
Foundry
TSMC
TSMC
Density
6.3M / 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
198 mm
7.8 inches
183 mm
7.2 inches
Outputs
2x DVI1x HDMI 1.3a2x mini-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
129 USD
149 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
Northern Islands
Successor
Southern Islands
Sea Islands