NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 275 PhysX Edition

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 275 PhysX Edition

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 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 's Advantages

Released 2 years and 4 months late

More VRAM (2GB vs 896GB)

144 additional rendering cores

Lower TDP (65W vs 219W)

NVIDIA GeForce GTX 275 PhysX Edition 's Advantages

Larger VRAM bandwidth (127.0GB/s vs 28.51GB/s)

Score

Benchmark

FP32 (float)

GeForce GT 640 +11%

0.693 TFLOPS

GeForce GTX 275 PhysX Edition

0.622 TFLOPS

GeForce GT 640

VS

GeForce GTX 275 PhysX Edition

Graphics Card

Jun 2012

Release Date

Feb 2010

GeForce 600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

1134 MHz

Memory

2GB

Memory Size

896MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

448bit

28.51GB/s

Bandwidth

127.0GB/s

Render Config

-

SM Count

30

384

Shading Units

240

32

TMUs

80

16

ROPs

28

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

224 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

17.72 GPixel/s

28.86 GTexel/s

Texture Rate

50.64 GTexel/s

-

692.7 GFLOPS

FP32 (float)

622.1 GFLOPS

28.86 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

65W

TDP

219W

250 W

Suggested PSU

550 W

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

Outputs

2x DVI

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

G92B

GK107-300-A2

GPU Variant

G92-421-B1

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.27 billion

Transistors

0.754 billion

118 mm²

Die Size

260 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.3

5.1

Shader Model

4.0

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