AMD Radeon HD 7870 XT vs NVIDIA Tesla K40t
GPU · Specs Compare
Graphics Card
Release Date
Nov 2012
Nov 2013
Generation
Southern Islands
Tesla Kepler
Type
Desktop
Professional
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
925 MHz
745 MHz
Boost Clock
975 MHz
876 MHz
Memory Clock
1500 MHz
1502 MHz
Memory
Memory Size
2GB
12GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
192.0GB/s
288.4GB/s
Render Config
Compute Units
24
—
Shading Units
1536
2880
TMUs
96
240
ROPs
32
48
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
1536 KB
Theoretical Performance
Pixel Rate
31.20 GPixel/s
52.56 GPixel/s
Texture Rate
93.60 GTexel/s
210.2 GTexel/s
FP32 (float)
2.995 TFLOPS
5.046 TFLOPS
FP64 (double)
748.8 GFLOPS
1.682 TFLOPS
Graphics Processor
GPU Name
Tahiti
GK110B
GPU Variant
Tahiti LE(215-0821122)
—
Architecture
GCN 1.0
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
7.08 billion
Die Size
352 mm²
561 mm²
Board Design
TDP
185W
245W
Suggested PSU
450 W
550 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 6-pin
—
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
3.0
Vulkan
1.2
1.2.175
Shader Model
5.1
6.5 (5.1)
CUDA
—
3.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.