NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 275 PhysX Edition

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 275 PhysX Edition

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 896MB VRAM GeForce GTX 275 PhysX Edition 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

Released 2 years and 2 months late

More VRAM (1536GB vs 896GB)

Lower TDP (75W vs 219W)

NVIDIA GeForce GTX 275 PhysX Edition 's Advantages

Larger VRAM bandwidth (127.0GB/s vs 38.40GB/s)

96 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 275 PhysX Edition +49%

0.622 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 275 PhysX Edition

Graphics Card

Apr 2012

Release Date

Feb 2010

GeForce 600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1134 MHz

Memory

1536MB

Memory Size

896MB

DDR3

Memory Type

GDDR3

192bit

Memory Bus

448bit

38.40GB/s

Bandwidth

127.0GB/s

Render Config

-

3

SM Count

30

144

Shading Units

240

24

TMUs

80

24

ROPs

28

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

224 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

17.72 GPixel/s

17.28 GTexel/s

Texture Rate

50.64 GTexel/s

-

414.7 GFLOPS

FP32 (float)

622.1 GFLOPS

34.56 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

75W

TDP

219W

250 W

Suggested PSU

550 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GF116

GPU Name

G92B

GF116-150-A1

GPU Variant

G92-421-B1

Fermi 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.17 billion

Transistors

0.754 billion

238 mm²

Die Size

260 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

1.3

5.1

Shader Model

4.0

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