NVIDIA GeForce GTX 275 vs NVIDIA GeForce GT 640 Rev. 2

VS

NVIDIA GeForce GTX 275 NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 275 's Advantages

Larger VRAM bandwidth (127.0GB/s vs 40.06GB/s)

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Released 4 years and 4 months late

More VRAM (1024GB vs 896GB)

144 additional rendering cores

Lower TDP (49W vs 219W)

Score

Benchmark

FP32 (float)

GeForce GTX 275

0.674 TFLOPS

GeForce GT 640 Rev. 2 +19%

0.803 TFLOPS

GeForce GTX 275

VS

GeForce GT 640 Rev. 2

Graphics Card

Jan 2009

Release Date

May 2013

GeForce 200

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

-

Base Clock

-

Boost Clock

-

1134 MHz

Memory Clock

1252 MHz

Memory

896MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

448bit

Memory Bus

64bit

127.0GB/s

Bandwidth

40.06GB/s

Render Config

30

SM Count

-

Compute Units

-

240

Shading Units

384

80

TMUs

32

28

ROPs

8

-

Tensor Cores

-

RT Cores

-

L1 Cache

16 KB (per SMX)

224 KB

L2 Cache

512 KB

Theoretical Performance

17.72 GPixel/s

Pixel Rate

8.368 GPixel/s

50.64 GTexel/s

Texture Rate

33.47 GTexel/s

-

FP16 (half)

-

673.9 GFLOPS

FP32 (float)

803.3 GFLOPS

84.24 GFLOPS

FP64 (double)

33.47 GFLOPS

Graphics Processor

GT200B

GPU Name

GK208

G200-105-B3

GPU Variant

GK208-400-A1

Tesla 2.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

1.4 billion

Transistors

1.02 billion

470 mm²

Die Size

87 mm²

Board Design

219W

TDP

49W

550 W

Suggested PSU

200 W

2x DVI

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

2x 6-pin

Power Connectors

None

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

3.5

4.0

Shader Model

5.1

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