GPU Comparison
RADEON
AMD Radeon HD 8870M
CORE STATE
Venus
VRAM
2 GB
CLOCK SPEED
775 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2013
VS
GEFORCE
Tesla K40c
CORE STATE
GK180
VRAM
12 GB
CLOCK SPEED
876 MHz
TDP
245 W
BUS WIDTH
384 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 8870M
Tesla K40c
Core Specs
Shading Units
640
2,880
+350.0%
Shaders
640
2,880
+350.0%
TMUs
40
240
+500.0%
ROPs
16
48
+200.0%
Compute Units
10
—
Clocks
Base Clock
725 MHz
745 MHz
Boost Clock
775 MHz
876 MHz
Memory Clock
1125 MHz
4.5 Gbps effective
1502 MHz
6 Gbps effective
Memory
Memory Size
2 GB
12 GB
VRAM (MB)
2,048
12,288
+500.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
384 bit
Bandwidth
72.00 GB/s
288.4 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
256 KB
1536 KB
Performance
Pixel Rate
12.40 GPixel/s
52.56 GPixel/s
Texture Rate
31.00 GTexel/s
210.2 GTexel/s
FP32 (TFLOPS)
992.0 GFLOPS
5.046 TFLOPS
FP64 (TFLOPS)
62.00 GFLOPS (1:16)
1.682 TFLOPS (1:3)
Power
TDP
—
245 W
TDP (W)
—
245
Suggested PSU
—
550 W
Power Connectors
—
1x 6-pin + 1x 8-pin
Architecture
Architecture
GCN 1.0
Kepler
GPU Name
Venus
GK180
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)
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