NVIDIA GeForce GTX 490 vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce GTX 490

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 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 490 's Advantages

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

336 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490 +180%

1.166 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 490

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Unknown

Release Date

Apr 2012

GeForce 400

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

854 MHz

Memory Clock

800 MHz

Memory

1536MB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

192bit

164.0GB/s

Bandwidth

38.40GB/s

Render Config

-

15

SM Count

3

480

Shading Units

144

60

TMUs

24

48

ROPs

24

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

384 KB

-

Theoretical Performance

18.24 GPixel/s

Pixel Rate

4.320 GPixel/s

36.48 GTexel/s

Texture Rate

17.28 GTexel/s

-

1166 GFLOPS

FP32 (float)

414.7 GFLOPS

145.8 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

365W

TDP

75W

750 W

Suggested PSU

250 W

3x DVI 1x mini-DisplayPort

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

None

Graphics Processor

GF100

GPU Name

GF116

GF100-375-A3

GPU Variant

GF116-150-A1

Fermi

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

3.1 billion

Transistors

1.17 billion

529 mm²

Die Size

238 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

2.0

CUDA

2.1

5.1

Shader Model

5.1

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