NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GT 640 OEM

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Larger VRAM bandwidth (38.40GB/s vs 28.51GB/s)

NVIDIA GeForce GT 640 OEM 's Advantages

More VRAM (2GB vs 1536GB)

240 additional rendering cores

Lower TDP (50W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GT 640 OEM +47%

0.612 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GT 640 OEM

Graphics Card

Apr 2012

Release Date

Apr 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

891 MHz

Memory

1536MB

Memory Size

2GB

DDR3

Memory Type

DDR3

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

28.51GB/s

Render Config

-

3

SM Count

-

144

Shading Units

384

24

TMUs

32

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

6.376 GPixel/s

17.28 GTexel/s

Texture Rate

25.50 GTexel/s

-

414.7 GFLOPS

FP32 (float)

612.1 GFLOPS

34.56 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

75W

TDP

50W

250 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

GK107

GF116-150-A1

GPU Variant

GK107-320-A2

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

1.27 billion

238 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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