NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce 7800 GTX 512

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce 7800 GTX 512

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM GeForce 7800 GTX 512 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 7 years and 5 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 51.20GB/s)

576 additional rendering cores

Lower TDP (65W vs 108W)

Score

GeForce GTX 645 OEM

VS

GeForce 7800 GTX 512

Graphics Card

Apr 2013

Release Date

Nov 2005

GeForce 600

Generation

GeForce 7 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

51.20GB/s

Render Config

-

576

Shading Units

-

48

TMUs

24

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

8.000 GPixel/s

39.55 GTexel/s

Texture Rate

12.00 GTexel/s

-

949.2 GFLOPS

FP32 (float)

-

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

108W

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

-

Graphics Processor

GK106

GPU Name

G70

GK106-200-A1

GPU Variant

GF-7800-GTX-512-A2

Kepler

Architecture

Curie

TSMC

Foundry

TSMC

28 nm

Process Size

110 nm

2.54 billion

Transistors

0.302 billion

221 mm²

Die Size

333 mm²

Graphics Features

12 (11_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

3.0

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