NVIDIA GeForce GT 640 vs NVIDIA P104 101

VS

NVIDIA GeForce GT 640

NVIDIA P104 101

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 4GB VRAM P104 101 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 125W)

NVIDIA P104 101 's Advantages

Released 5 years and 7 months late

Boost Clock1683MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (256.3GB/s vs 28.51GB/s)

2176 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

P104 101 +1143%

8.617 TFLOPS

GeForce GT 640

VS

P104 101

Graphics Card

Jun 2012

Release Date

Jan 2018

GeForce 600

Generation

Mining GPUs

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1506 MHz

-

Boost Clock

1683 MHz

891 MHz

Memory Clock

2002 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

256.3GB/s

Render Config

-

SM Count

20

384

Shading Units

2560

32

TMUs

160

16

ROPs

64

-

16 KB (per SMX)

L1 Cache

48 KB (per SM)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

107.7 GPixel/s

28.86 GTexel/s

Texture Rate

269.3 GTexel/s

-

FP16 (half)

134.6 GFLOPS

692.7 GFLOPS

FP32 (float)

8.617 TFLOPS

28.86 GFLOPS

FP64 (double)

269.3 GFLOPS

Board Design

65W

TDP

125W

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

No outputs

None

Power Connectors

1x 8-pin

Graphics Processor

GK107

GPU Name

GP104

GK107-300-A2

GPU Variant

GP104-101-A1

Kepler

Architecture

Pascal

TSMC

Foundry

TSMC

28 nm

Process Size

16 nm

1.27 billion

Transistors

7.2 billion

118 mm²

Die Size

314 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

6.1

5.1

Shader Model

6.4

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