NVIDIA GeForce GT 640 vs NVIDIA GeForce 6800 GS

VS

NVIDIA GeForce GT 640

NVIDIA GeForce 6800 GS

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 256MB VRAM GeForce 6800 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 6 years and 7 months late

More VRAM (2GB vs 256GB)

384 additional rendering cores

NVIDIA GeForce 6800 GS 's Advantages

Larger VRAM bandwidth (32.00GB/s vs 28.51GB/s)

Score

GeForce GT 640

VS

GeForce 6800 GS

Graphics Card

Jun 2012

Release Date

Nov 2005

GeForce 600

Generation

GeForce 6 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

891 MHz

Memory Clock

500 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

32.00GB/s

Render Config

-

384

Shading Units

-

32

TMUs

12

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

3.400 GPixel/s

28.86 GTexel/s

Texture Rate

5.100 GTexel/s

-

692.7 GFLOPS

FP32 (float)

-

28.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

Unknown

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

1x 6-pin

Graphics Processor

GK107

GPU Name

NV41

GK107-300-A2

GPU Variant

-

Kepler

Architecture

Curie

TSMC

Foundry

TSMC

28 nm

Process Size

130 nm

1.27 billion

Transistors

0.19 billion

118 mm²

Die Size

225 mm²

Graphics Features

12 (11_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.0 (full) 2.1 (partial)

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

3.0

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