NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 260

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 260

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 896MB VRAM GeForce GTX 260 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 3 years and 10 months late

More VRAM (1536GB vs 896GB)

Lower TDP (75W vs 182W)

NVIDIA GeForce GTX 260 's Advantages

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

48 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 260 +14%

0.477 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 260

Graphics Card

Apr 2012

Release Date

Jun 2008

GeForce 600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

999 MHz

Memory

1536MB

Memory Size

896MB

DDR3

Memory Type

GDDR3

192bit

Memory Bus

448bit

38.40GB/s

Bandwidth

111.9GB/s

Render Config

-

3

SM Count

24

144

Shading Units

192

24

TMUs

64

24

ROPs

28

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

224 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

16.13 GPixel/s

17.28 GTexel/s

Texture Rate

36.86 GTexel/s

-

414.7 GFLOPS

FP32 (float)

476.9 GFLOPS

34.56 GFLOPS

FP64 (double)

59.62 GFLOPS

Board Design

75W

TDP

182W

250 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x S-Video

None

Power Connectors

2x 6-pin

Graphics Processor

GF116

GPU Name

GT200

GF116-150-A1

GPU Variant

G200-100-A2

Fermi 2.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

65 nm

1.17 billion

Transistors

1.4 billion

238 mm²

Die Size

576 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

1.3

5.1

Shader Model

4.0

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