NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 460

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 460

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 768MB VRAM GeForce GTX 460 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

Released 1 years and 9 months late

More VRAM (1536GB vs 768GB)

Lower TDP (75W vs 160W)

NVIDIA GeForce GTX 460 's Advantages

Larger VRAM bandwidth (86.40GB/s vs 38.40GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 460 +118%

0.907 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 460

Graphics Card

Apr 2012

Release Date

Jul 2010

GeForce 600

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

1536MB

Memory Size

768MB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

192bit

38.40GB/s

Bandwidth

86.40GB/s

Render Config

-

3

SM Count

7

144

Shading Units

336

24

TMUs

56

24

ROPs

24

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

384 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

9.450 GPixel/s

17.28 GTexel/s

Texture Rate

37.80 GTexel/s

-

414.7 GFLOPS

FP32 (float)

907.2 GFLOPS

34.56 GFLOPS

FP64 (double)

75.60 GFLOPS

Board Design

75W

TDP

160W

250 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

-

Graphics Processor

GF116

GPU Name

GF104

GF116-150-A1

GPU Variant

GF104-300-KB-A1

Fermi 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

1.95 billion

238 mm²

Die Size

332 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

2.1

5.1

Shader Model

5.1

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