NVIDIA GeForce GTX 260 Rev. 2 vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce GTX 260 Rev. 2

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 260 Rev. 2 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 260 Rev. 2 's Advantages

Larger VRAM bandwidth (111.9GB/s vs 38.40GB/s)

48 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 3 years and 9 months late

More VRAM (1536GB vs 896GB)

Lower TDP (75W vs 182W)

Score

Benchmark

FP32 (float)

GeForce GTX 260 Rev. 2 +14%

0.477 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 260 Rev. 2

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Jul 2008

Release Date

Apr 2012

GeForce 200

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

999 MHz

Memory Clock

800 MHz

Memory

896MB

Memory Size

1536MB

GDDR3

Memory Type

DDR3

448bit

Memory Bus

192bit

111.9GB/s

Bandwidth

38.40GB/s

Render Config

-

24

SM Count

3

192

Shading Units

144

64

TMUs

24

28

ROPs

24

-

L1 Cache

64 KB (per SM)

224 KB

L2 Cache

384 KB

-

Theoretical Performance

16.13 GPixel/s

Pixel Rate

4.320 GPixel/s

36.86 GTexel/s

Texture Rate

17.28 GTexel/s

-

476.9 GFLOPS

FP32 (float)

414.7 GFLOPS

59.62 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

182W

TDP

75W

450 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 6-pin

Power Connectors

None

Graphics Processor

GT200B

GPU Name

GF116

G200-103-B3

GPU Variant

GF116-150-A1

Tesla 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

1.4 billion

Transistors

1.17 billion

470 mm²

Die Size

238 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

1.3

CUDA

2.1

4.0

Shader Model

5.1

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