NVIDIA GeForce GTX 275 PhysX Edition vs NVIDIA GeForce GTX 645 OEM

VS

NVIDIA GeForce GTX 275 PhysX Edition

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 PhysX Edition and 1024MB VRAM GeForce GTX 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 275 PhysX Edition 's Advantages

Larger VRAM bandwidth (127.0GB/s vs 64.00GB/s)

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 3 years and 2 months late

More VRAM (1024GB vs 896GB)

336 additional rendering cores

Lower TDP (65W vs 219W)

Score

Benchmark

FP32 (float)

GeForce GTX 275 PhysX Edition

0.622 TFLOPS

GeForce GTX 645 OEM +52%

0.949 TFLOPS

GeForce GTX 275 PhysX Edition

VS

GeForce GTX 645 OEM

Graphics Card

Feb 2010

Release Date

Apr 2013

GeForce 200

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1134 MHz

Memory Clock

1000 MHz

Memory

896MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

448bit

Memory Bus

128bit

127.0GB/s

Bandwidth

64.00GB/s

Render Config

-

30

SM Count

-

240

Shading Units

576

80

TMUs

48

28

ROPs

16

-

L1 Cache

16 KB (per SMX)

224 KB

L2 Cache

256 KB

-

Theoretical Performance

17.72 GPixel/s

Pixel Rate

9.888 GPixel/s

50.64 GTexel/s

Texture Rate

39.55 GTexel/s

-

622.1 GFLOPS

FP32 (float)

949.2 GFLOPS

77.76 GFLOPS

FP64 (double)

39.55 GFLOPS

Board Design

219W

TDP

65W

550 W

Suggested PSU

250 W

2x DVI

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

G92B

GPU Name

GK106

G92-421-B1

GPU Variant

GK106-200-A1

Tesla

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.754 billion

Transistors

2.54 billion

260 mm²

Die Size

221 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

1.3

CUDA

3.0

4.0

Shader Model

5.1

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