NVIDIA GeForce 7800 GTX 512 vs ATI Radeon HD 4855

VS

NVIDIA GeForce 7800 GTX 512

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 512MB VRAM GeForce 7800 GTX 512 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 7800 GTX 512 's Advantages

Lower TDP (108W vs 110W)

ATI Radeon HD 4855 's Advantages

Released 4 years and 2 months late

Larger VRAM bandwidth (115.2GB/s vs 51.20GB/s)

640 additional rendering cores

Score

GeForce 7800 GTX 512

VS

Radeon HD 4855

Graphics Card

Nov 2005

Release Date

Jan 2010

GeForce 7 PCIe

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

51.20GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

8

-

Shading Units

640

24

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per CU)

-

L2 Cache

256 KB

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

9.200 GPixel/s

12.00 GTexel/s

Texture Rate

18.40 GTexel/s

-

FP32 (float)

736.0 GFLOPS

-

FP64 (double)

147.2 GFLOPS

Board Design

108W

TDP

110W

300 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

-

Power Connectors

1x 6-pin

Graphics Processor

G70

GPU Name

RV770

GF-7800-GTX-512-A2

GPU Variant

RV770 PRO (215-0669065)

Curie

Architecture

TeraScale

TSMC

Foundry

TSMC

110 nm

Process Size

55 nm

0.302 billion

Transistors

0.956 billion

333 mm²

Die Size

256 mm²

Graphics Features

9.0c (9_3)

DirectX

10.1 (10_1)

2.1

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

3.0

Shader Model

4.1

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