Home GPU Comparison AMD Radeon HD 7870M vs NVIDIA GeForce GT 640M LE

AMD Radeon HD 7870M vs NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7870M and 2GB VRAM GeForce GT 640M LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870M 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 50.24GB/s)
544 additional rendering cores
NVIDIA GeForce GT 640M LE 's Advantages
Lower TDP (32W vs 45W)

Score

Benchmark

FP32 (float)
Radeon HD 7870M +254%
1.024 TFLOPS
GeForce GT 640M LE
0.289 TFLOPS
VS

Graphics Card

Apr 2012
Release Date
May 2012
London
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
Base Clock
-
-
Boost Clock
-
1000 MHz
Memory Clock
785 MHz

Memory

2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
64.00GB/s
Bandwidth
50.24GB/s

Render Config

-
SM Count
2
10
Compute Units
-
640
Shading Units
96
40
TMUs
16
16
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
256 KB
L2 Cache
256 KB

Theoretical Performance

12.80 GPixel/s
Pixel Rate
3.012 GPixel/s
32.00 GTexel/s
Texture Rate
12.05 GTexel/s
-
FP16 (half)
-
1024 GFLOPS
FP32 (float)
289.0 GFLOPS
64.00 GFLOPS
FP64 (double)
24.08 GFLOPS

Graphics Processor

Heathrow
GPU Name
GF108
Heathrow XT (216-0835033)
GPU Variant
-
GCN 1.0
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.5 billion
Transistors
0.585 billion
123 mm²
Die Size
116 mm²

Board Design

45W
TDP
32W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
-

Graphics Features

12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
2.1
5.1
Shader Model
5.1

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