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GPU Comparison
NVIDIA Tesla K40st vs NVIDIA Tesla K8
NVIDIA Tesla K40st vs NVIDIA Tesla K8
VS
NVIDIA Tesla K40st
NVIDIA Tesla K8
We compared two Professional market GPUs: 12GB VRAM Tesla K40st and 8GB VRAM Tesla K8 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K40st 's Advantages
More VRAM (12GB vs 8GB)
Larger VRAM bandwidth (288.4GB/s vs 160.0GB/s)
1344 additional rendering cores
NVIDIA Tesla K8 's Advantages
Released 10 months late
Boost Clock811MHz
Lower TDP (100W vs 245W)
Score
Benchmark
FP32 (float)
Tesla K40st
+32%
3.312 TFLOPS
Tesla K8
2.491 TFLOPS
Tesla K40st
VS
Tesla K8
Graphics Card
Nov 2013
Release Date
Sep 2014
Tesla
Generation
Tesla
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
693 MHz
-
Boost Clock
811 MHz
1502 MHz
Memory Clock
1250 MHz
Memory
12GB
Memory Size
8GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
288.4GB/s
Bandwidth
160.0GB/s
Render Config
-
SM Count
-
-
Compute Units
-
2880
Shading Units
1536
240
TMUs
128
48
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
1536 KB
L2 Cache
512 KB
Theoretical Performance
34.50 GPixel/s
Pixel Rate
25.95 GPixel/s
138.0 GTexel/s
Texture Rate
103.8 GTexel/s
-
FP16 (half)
-
3.312 TFLOPS
FP32 (float)
2.491 TFLOPS
1104 GFLOPS
FP64 (double)
103.8 GFLOPS
Graphics Processor
GK110B
GPU Name
GK104
-
GPU Variant
-
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
7.08 billion
Transistors
3.54 billion
561 mm²
Die Size
294 mm²
Board Design
245W
TDP
100W
550 W
Suggested PSU
300 W
No outputs
Outputs
No outputs
-
Power Connectors
1x 6-pin
Graphics Features
12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.5
CUDA
3.0
5.1
Shader Model
5.1
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