NVIDIA GeForce GTX 280 vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce GTX 280

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 280 and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 280 's Advantages

Larger VRAM bandwidth (141.7GB/s vs 38.40GB/s)

96 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 3 years and 10 months late

More VRAM (1536GB vs 1024GB)

Lower TDP (75W vs 236W)

Score

Benchmark

FP32 (float)

GeForce GTX 280 +49%

0.622 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 280

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Jun 2008

Release Date

Apr 2012

GeForce 200

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1107 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

1536MB

GDDR3

Memory Type

DDR3

512bit

Memory Bus

192bit

141.7GB/s

Bandwidth

38.40GB/s

Render Config

-

30

SM Count

3

240

Shading Units

144

80

TMUs

24

32

ROPs

24

-

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

19.26 GPixel/s

Pixel Rate

4.320 GPixel/s

48.16 GTexel/s

Texture Rate

17.28 GTexel/s

-

622.1 GFLOPS

FP32 (float)

414.7 GFLOPS

77.76 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

236W

TDP

75W

550 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

GT200

GPU Name

GF116

G200-300-A2

GPU Variant

GF116-150-A1

Tesla 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

1.4 billion

Transistors

1.17 billion

576 mm²

Die Size

238 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

1.3

CUDA

2.1

4.0

Shader Model

5.1

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