GPU Comparison
RADEON
AMD Radeon HD 8850M
CORE STATE
Venus
VRAM
2 GB
CLOCK SPEED
625 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2013
VS
GEFORCE
Tesla K20Xm
CORE STATE
GK110
VRAM
6 GB
CLOCK SPEED
—
TDP
235 W
BUS WIDTH
384 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
HD 8850M
Tesla K20Xm
Core Specs
Shading Units
640
2,688
+320.0%
Shaders
640
2,688
+320.0%
TMUs
40
224
+460.0%
ROPs
16
48
+200.0%
Compute Units
10
—
Clocks
Base Clock
575 MHz
—
Boost Clock
625 MHz
—
GPU Clock
—
732 MHz
Memory Clock
1000 MHz
4 Gbps effective
1300 MHz
5.2 Gbps effective
Memory
Memory Size
2 GB
6 GB
VRAM (MB)
2,048
6,144
+200.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
384 bit
Bandwidth
64.00 GB/s
249.6 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
256 KB
1536 KB
Performance
Pixel Rate
10.00 GPixel/s
40.99 GPixel/s
Texture Rate
25.00 GTexel/s
164.0 GTexel/s
FP32 (TFLOPS)
800.0 GFLOPS
3.935 TFLOPS
FP64 (TFLOPS)
50.00 GFLOPS (1:16)
1,311.7 GFLOPS (1:3)
Power
TDP
—
235 W
TDP (W)
—
235
Suggested PSU
—
550 W
Architecture
Architecture
GCN 1.0
Kepler
GPU Name
Venus
GK110
Generation
Solar System
(HD 8800M)
Tesla Kepler
(Kxx)
Process Size
28 nm
28 nm
Transistors
1,500 million
7,080 million
Die Size
123 mm²
561 mm²
Foundry
TSMC
TSMC
Density
12.2M / mm²
12.6M / mm²
API Support
DirectX
12 (11_1)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.175
OpenCL
2.1 (1.2)
3.0
CUDA
—
3.5
Shader Model
6.5 (5.1)
6.5 (5.1)
Physical
Slot Width
—
Dual-slot
Length
—
267 mm
10.5 inches
Outputs
—
No outputs
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
—
7,699 USD
Production
End-of-life
End-of-life
Predecessor
London
Tesla Fermi
Successor
Gem System
Tesla Maxwell