NVIDIA GeForce 9800 GT Rebrand vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce 9800 GT Rebrand

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 512MB VRAM GeForce 9800 GT Rebrand and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 9800 GT Rebrand 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 28.51GB/s)

NVIDIA GeForce GT 640 's Advantages

Released 3 years and 11 months late

More VRAM (2GB vs 512GB)

256 additional rendering cores

Lower TDP (65W vs 125W)

Score

Benchmark

FP32 (float)

GeForce 9800 GT Rebrand

0.448 TFLOPS

GeForce GT 640 +54%

0.693 TFLOPS

GeForce 9800 GT Rebrand

VS

GeForce GT 640

Graphics Card

Jul 2008

Release Date

Jun 2012

GeForce 9

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

891 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

128bit

64.00GB/s

Bandwidth

28.51GB/s

Render Config

-

16

SM Count

-

128

Shading Units

384

64

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per SMX)

64 KB

L2 Cache

256 KB

-

Theoretical Performance

11.60 GPixel/s

Pixel Rate

7.216 GPixel/s

46.40 GTexel/s

Texture Rate

28.86 GTexel/s

-

448.0 GFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Board Design

125W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

G92

GPU Name

GK107

G92-270-A2

GPU Variant

GK107-300-A2

Tesla

Architecture

Kepler

TSMC

Foundry

TSMC

65 nm

Process Size

28 nm

0.754 billion

Transistors

1.27 billion

324 mm²

Die Size

118 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

CUDA

3.0

4.0

Shader Model

5.1

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