ATI Radeon HD 4870 X2 vs NVIDIA GeForce GT 420 OEM

VS

ATI Radeon HD 4870 X2

NVIDIA GeForce GT 420 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 1024MB VRAM GeForce GT 420 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 28.80GB/s)

752 additional rendering cores

NVIDIA GeForce GT 420 OEM 's Advantages

Released 2 years and 1 months late

Lower TDP (50W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2 +795%

1.2 TFLOPS

GeForce GT 420 OEM

0.134 TFLOPS

Radeon HD 4870 X2

VS

GeForce GT 420 OEM

Graphics Card

Aug 2008

Release Date

Sep 2010

Radeon R700

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

28.80GB/s

Render Config

10

Compute Units

-

SM Count

1

800

Shading Units

48

40

TMUs

4

16

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

1.400 GPixel/s

30.00 GTexel/s

Texture Rate

2.800 GTexel/s

-

1200 GFLOPS

FP32 (float)

134.4 GFLOPS

240.0 GFLOPS

FP64 (double)

11.20 GFLOPS

Board Design

286W

TDP

50W

600 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

R700

GPU Name

GF108

R700 XT (215-0669045)

GPU Variant

GF108-200-A1

TeraScale

Architecture

Fermi

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

0.585 billion

256 mm²

Die Size

116 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

4.1

Shader Model

5.1

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