ATI Radeon HD 4870 X2 vs ATI Radeon HD 3450 PCI

VS

ATI Radeon HD 4870 X2 ATI Radeon HD 3450 PCI

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 512MB VRAM Radeon HD 3450 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

Released 7 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 6.400GB/s)

760 additional rendering cores

ATI Radeon HD 3450 PCI 's Advantages

Lower TDP (25W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2 +2400%

1.2 TFLOPS

Radeon HD 3450 PCI

0.048 TFLOPS

Radeon HD 4870 X2

VS

Radeon HD 3450 PCI

Graphics Card

Aug 2008

Release Date

Jan 2008

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCI

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

-

10

Compute Units

2

800

Shading Units

40

TMUs

4

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

64 KB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.400 GPixel/s

30.00 GTexel/s

Texture Rate

2.400 GTexel/s

-

FP16 (half)

-

1200 GFLOPS

FP32 (float)

48.00 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Graphics Processor

R700

GPU Name

RV620

R700 XT (215-0669045)

GPU Variant

RV620 LE

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.181 billion

256 mm²

Die Size

67 mm²

Board Design

286W

TDP

25W

600 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

4.1

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