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
GEFORCE
Tesla K20m
CORE STATE
GK110
VRAM
5 GB
CLOCK SPEED
—
TDP
225 W
BUS WIDTH
320 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6770
Tesla K20m
Core Specs
Shading Units
800
2,496
+212.0%
Shaders
800
2,496
+212.0%
TMUs
40
208
+420.0%
ROPs
16
40
+150.0%
Compute Units
10
—
Clocks
GPU Clock
850 MHz
706 MHz
Memory Clock
1200 MHz
4.8 Gbps effective
1300 MHz
5.2 Gbps effective
Memory
Memory Size
1024 MB
5 GB
VRAM (MB)
1,024
5,120
+400.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
320 bit
Bandwidth
76.80 GB/s
208.0 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
256 KB
1280 KB
Performance
Pixel Rate
13.60 GPixel/s
36.71 GPixel/s
Texture Rate
34.00 GTexel/s
146.8 GTexel/s
FP32 (TFLOPS)
1,360.0 GFLOPS
3.524 TFLOPS
FP64 (TFLOPS)
—
1,174.8 GFLOPS (1:3)
Power
TDP
108 W
225 W
TDP (W)
108
225
+108.3%
Suggested PSU
300 W
550 W
Power Connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Architecture
Architecture
TeraScale 2
Kepler
GPU Name
Juniper
GK110
Generation
Northern Islands
(HD 6700)
Tesla Kepler
(Kxx)
Process Size
40 nm
28 nm
Transistors
1,040 million
7,080 million
Die Size
166 mm²
561 mm²
Foundry
TSMC
TSMC
Density
6.3M / mm²
12.6M / mm²
API Support
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
Vulkan
—
1.2.175
OpenCL
1.2
3.0
CUDA
—
3.5
Shader Model
5.0
6.5 (5.1)
Physical
Slot Width
Dual-slot
Dual-slot
Length
198 mm
7.8 inches
267 mm
10.5 inches
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
No outputs
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
Other
Launch Price
129 USD
3,199 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
Tesla Fermi
Successor
Southern Islands
Tesla Maxwell