NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce 9800 GT

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce 9800 GT

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM GeForce 9800 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 4 years and 9 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 57.60GB/s)

464 additional rendering cores

Lower TDP (65W vs 125W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM +182%

0.949 TFLOPS

GeForce 9800 GT

0.336 TFLOPS

GeForce GTX 645 OEM

VS

GeForce 9800 GT

Graphics Card

Apr 2013

Release Date

Jul 2008

GeForce 600

Generation

GeForce 9

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

57.60GB/s

Render Config

-

SM Count

14

576

Shading Units

112

48

TMUs

56

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

9.600 GPixel/s

39.55 GTexel/s

Texture Rate

33.60 GTexel/s

-

949.2 GFLOPS

FP32 (float)

336.0 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

125W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin

Graphics Processor

GK106

GPU Name

G92B

GK106-200-A1

GPU Variant

G92-280-B1

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.54 billion

Transistors

0.754 billion

221 mm²

Die Size

260 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.1

5.1

Shader Model

4.0

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