NVIDIA GeForce 8800 GTS 320 vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce 8800 GTS 320

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 320MB VRAM GeForce 8800 GTS 320 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Released 5 years and 2 months late

More VRAM (1024GB vs 320GB)

Larger VRAM bandwidth (91.87GB/s vs 63.36GB/s)

192 additional rendering cores

Lower TDP (102W vs 143W)

Score

Benchmark

FP32 (float)

GeForce 8800 GTS 320

0.228 TFLOPS

GeForce GT 645 OEM +292%

0.894 TFLOPS

GeForce 8800 GTS 320

VS

GeForce GT 645 OEM

Graphics Card

Feb 2007

Release Date

Apr 2012

GeForce 8

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

792 MHz

Memory Clock

957 MHz

Memory

320MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

320bit

Memory Bus

192bit

63.36GB/s

Bandwidth

91.87GB/s

Render Config

-

12

SM Count

6

96

Shading Units

288

24

TMUs

48

20

ROPs

24

-

L1 Cache

64 KB (per SM)

80 KB

L2 Cache

384 KB

-

Theoretical Performance

10.26 GPixel/s

Pixel Rate

9.312 GPixel/s

24.62 GTexel/s

Texture Rate

37.25 GTexel/s

-

228.1 GFLOPS

FP32 (float)

894.0 GFLOPS

-

FP64 (double)

74.50 GFLOPS

Board Design

143W

TDP

102W

300 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin

Power Connectors

-

Graphics Processor

G80

GPU Name

GF114

G80-100-K0-A2

GPU Variant

-

Tesla

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

90 nm

Process Size

40 nm

0.681 billion

Transistors

1.95 billion

484 mm²

Die Size

332 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1 (1.0)

OpenCL

1.1

N/A

Vulkan

N/A

1.0

CUDA

2.1

4.0

Shader Model

5.1

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