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GPU Comparison
NVIDIA Tesla C870 vs NVIDIA Tesla K40m
NVIDIA Tesla C870 vs NVIDIA Tesla K40m
VS
NVIDIA Tesla C870
NVIDIA Tesla K40m
We compared two Professional market GPUs: 1536MB VRAM Tesla C870 and 12GB VRAM Tesla K40m to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla C870 's Advantages
Lower TDP (171W vs 245W)
NVIDIA Tesla K40m 's Advantages
Released 6 years and 6 months late
Boost Clock876MHz
More VRAM (12GB vs 1GB)
Larger VRAM bandwidth (288.4GB/s vs 76.80GB/s)
2752 additional rendering cores
Score
Benchmark
FP32 (float)
Tesla C870
0.346 TFLOPS
Tesla K40m
+1358%
5.046 TFLOPS
Tesla C870
VS
Tesla K40m
Graphics Card
May 2007
Release Date
Nov 2013
Tesla
Generation
Tesla
Professional
Type
Professional
PCIe 1.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
745 MHz
-
Boost Clock
876 MHz
800 MHz
Memory Clock
1502 MHz
Memory
1536MB
Memory Size
12GB
GDDR3
Memory Type
GDDR5
384bit
Memory Bus
384bit
76.80GB/s
Bandwidth
288.4GB/s
Render Config
16
SM Count
-
-
Compute Units
-
128
Shading Units
2880
32
TMUs
240
24
ROPs
48
-
Tensor Cores
-
-
RT Cores
-
-
L1 Cache
16 KB (per SMX)
96 KB
L2 Cache
1536 KB
Theoretical Performance
14.40 GPixel/s
Pixel Rate
52.56 GPixel/s
38.40 GTexel/s
Texture Rate
210.2 GTexel/s
-
FP16 (half)
-
345.6 GFLOPS
FP32 (float)
5.046 TFLOPS
-
FP64 (double)
1.682 TFLOPS
Graphics Processor
G80
GPU Name
GK110B
-
GPU Variant
-
Tesla
Architecture
Kepler
TSMC
Foundry
TSMC
90 nm
Process Size
28 nm
0.681 billion
Transistors
7.08 billion
484 mm²
Die Size
561 mm²
Board Design
171W
TDP
245W
450 W
Suggested PSU
550 W
No outputs
Outputs
No outputs
2x 6-pin
Power Connectors
-
Graphics Features
11.1 (10_0)
DirectX
12 (11_1)
3.3
OpenGL
4.6
1.1 (1.0)
OpenCL
3.0
N/A
Vulkan
1.1
1.0
CUDA
3.5
4.0
Shader Model
5.1
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