NVIDIA GeForce GTX 460 X2 vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce GTX 460 X2 NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 460 X2 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 460 X2 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 38.40GB/s)

192 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 1 years and 1 months late

More VRAM (1536GB vs 1024GB)

Lower TDP (75W vs 160W)

Score

Benchmark

FP32 (float)

GeForce GTX 460 X2 +126%

0.942 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 460 X2

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Mar 2011

Release Date

Apr 2012

GeForce 400

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

192bit

115.2GB/s

Bandwidth

38.40GB/s

Render Config

7

SM Count

3

-

Compute Units

-

336

Shading Units

144

56

TMUs

24

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

384 KB

Theoretical Performance

9.814 GPixel/s

Pixel Rate

4.320 GPixel/s

39.26 GTexel/s

Texture Rate

17.28 GTexel/s

-

FP16 (half)

-

941.5 GFLOPS

FP32 (float)

414.7 GFLOPS

78.46 GFLOPS

FP64 (double)

34.56 GFLOPS

Graphics Processor

GF104

GPU Name

GF116

GF104-300-KB-A1

GPU Variant

GF116-150-A1

Fermi

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

1.17 billion

332 mm²

Die Size

238 mm²

Board Design

160W

TDP

75W

450 W

Suggested PSU

250 W

3x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

None

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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