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 Pro 555
CORE STATE
Polaris 21
VRAM
2 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6770
Pro 555
Core Specs
Shading Units
800
768
-4.0%
Shaders
800
768
-4.0%
TMUs
40
48
+20.0%
ROPs
16
16
0.0%
Compute Units
10
12
+20.0%
Clocks
GPU Clock
850 MHz
850 MHz
Memory Clock
1200 MHz
4.8 Gbps effective
1275 MHz
5.1 Gbps effective
Memory
Memory Size
1024 MB
2 GB
VRAM (MB)
1,024
2,048
+100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
76.80 GB/s
81.60 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
1024 KB
Performance
Pixel Rate
13.60 GPixel/s
13.60 GPixel/s
Texture Rate
34.00 GTexel/s
40.80 GTexel/s
FP32 (TFLOPS)
1,360.0 GFLOPS
1,305.6 GFLOPS
FP64 (TFLOPS)
—
81.60 GFLOPS (1:16)
FP16 (TFLOPS)
—
1,305.6 GFLOPS (1:1)
Power
TDP
108 W
75 W
TDP (W)
108
75
-30.6%
Suggested PSU
300 W
—
Power Connectors
1x 6-pin
None
Architecture
Architecture
TeraScale 2
GCN 4.0
GPU Name
Juniper
Polaris 21
Generation
Northern Islands
(HD 6700)
Radeon Pro Mac
(500 Series)
Process Size
40 nm
14 nm
Transistors
1,040 million
3,000 million
Die Size
166 mm²
123 mm²
Foundry
TSMC
GlobalFoundries
Density
6.3M / mm²
24.4M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
Vulkan
—
1.3
OpenCL
1.2
2.1
Shader Model
5.0
6.7
Physical
Slot Width
Dual-slot
IGP
Length
198 mm
7.8 inches
—
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Portable Device Dependent
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x8
Other
Launch Price
129 USD
—
Production
End-of-life
End-of-life
Predecessor
Evergreen
—
Successor
Southern Islands
—