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GPU Comparison
NVIDIA Tesla K40t vs NVIDIA Tesla C870
NVIDIA Tesla K40t vs NVIDIA Tesla C870
VS
NVIDIA Tesla K40t
NVIDIA Tesla C870
We compared two Professional market GPUs: 12GB VRAM Tesla K40t and 1536MB VRAM Tesla C870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K40t '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
NVIDIA Tesla C870 's Advantages
Lower TDP (171W vs 245W)
Score
Benchmark
FP32 (float)
Tesla K40t
+1358%
5.046 TFLOPS
Tesla C870
0.346 TFLOPS
Tesla K40t
VS
Tesla C870
Graphics Card
Nov 2013
Release Date
May 2007
Tesla
Generation
Tesla
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
745 MHz
Base Clock
-
876 MHz
Boost Clock
-
1502 MHz
Memory Clock
800 MHz
Memory
12GB
Memory Size
1536MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
384bit
288.4GB/s
Bandwidth
76.80GB/s
Render Config
-
SM Count
16
-
Compute Units
-
2880
Shading Units
128
240
TMUs
32
48
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
-
1536 KB
L2 Cache
96 KB
Theoretical Performance
52.56 GPixel/s
Pixel Rate
14.40 GPixel/s
210.2 GTexel/s
Texture Rate
38.40 GTexel/s
-
FP16 (half)
-
5.046 TFLOPS
FP32 (float)
345.6 GFLOPS
1.682 TFLOPS
FP64 (double)
-
Graphics Processor
GK110B
GPU Name
G80
-
GPU Variant
-
Kepler
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
90 nm
7.08 billion
Transistors
0.681 billion
561 mm²
Die Size
484 mm²
Board Design
245W
TDP
171W
550 W
Suggested PSU
450 W
No outputs
Outputs
No outputs
-
Power Connectors
2x 6-pin
Graphics Features
12 (11_1)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1 (1.0)
1.1
Vulkan
N/A
3.5
CUDA
1.0
5.1
Shader Model
4.0
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