NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 490

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 490

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 1536MB VRAM GeForce GTX 490 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 365W)

NVIDIA GeForce GTX 490 's Advantages

Larger VRAM bandwidth (164.0GB/s vs 38.40GB/s)

336 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 490 +180%

1.166 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 490

Graphics Card

Apr 2012

Release Date

Unknown

GeForce 600

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

854 MHz

Memory

1536MB

Memory Size

1536MB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

384bit

38.40GB/s

Bandwidth

164.0GB/s

Render Config

-

3

SM Count

15

144

Shading Units

480

24

TMUs

60

24

ROPs

48

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

768 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

18.24 GPixel/s

17.28 GTexel/s

Texture Rate

36.48 GTexel/s

-

414.7 GFLOPS

FP32 (float)

1166 GFLOPS

34.56 GFLOPS

FP64 (double)

145.8 GFLOPS

Board Design

75W

TDP

365W

250 W

Suggested PSU

750 W

2x DVI 1x mini-HDMI 1.3a

Outputs

3x DVI 1x mini-DisplayPort

None

Power Connectors

2x 8-pin

Graphics Processor

GF116

GPU Name

GF100

GF116-150-A1

GPU Variant

GF100-375-A3

Fermi 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

3.1 billion

238 mm²

Die Size

529 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

2.0

5.1

Shader Model

5.1

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