NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 280

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 280

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM GeForce GTX 280 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 4 years late

More VRAM (2GB vs 1024GB)

144 additional rendering cores

Lower TDP (65W vs 236W)

NVIDIA GeForce GTX 280 's Advantages

Larger VRAM bandwidth (141.7GB/s vs 28.51GB/s)

Score

Benchmark

FP32 (float)

GeForce GT 640 +11%

0.693 TFLOPS

GeForce GTX 280

0.622 TFLOPS

GeForce GT 640

VS

GeForce GTX 280

Graphics Card

Jun 2012

Release Date

Jun 2008

GeForce 600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

1107 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

512bit

28.51GB/s

Bandwidth

141.7GB/s

Render Config

-

SM Count

30

384

Shading Units

240

32

TMUs

80

16

ROPs

32

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

19.26 GPixel/s

28.86 GTexel/s

Texture Rate

48.16 GTexel/s

-

692.7 GFLOPS

FP32 (float)

622.1 GFLOPS

28.86 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

65W

TDP

236W

250 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

GT200

GK107-300-A2

GPU Variant

G200-300-A2

Kepler

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

1.27 billion

Transistors

1.4 billion

118 mm²

Die Size

576 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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