AMD Radeon HD 6850 X2 vs ATI Radeon HD 3450 PCI

VS

AMD Radeon HD 6850 X2 ATI Radeon HD 3450 PCI

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 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

AMD Radeon HD 6850 X2 's Advantages

Released 3 years and 8 months late

Larger VRAM bandwidth (134.4GB/s vs 6.400GB/s)

920 additional rendering cores

ATI Radeon HD 3450 PCI 's Advantages

Lower TDP (25W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2 +3100%

1.536 TFLOPS

Radeon HD 3450 PCI

0.048 TFLOPS

Radeon HD 6850 X2

VS

Radeon HD 3450 PCI

Graphics Card

Sep 2011

Release Date

Jan 2008

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCI

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

-

12

Compute Units

2

960

Shading Units

40

48

TMUs

4

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

Theoretical Performance

25.60 GPixel/s

Pixel Rate

2.400 GPixel/s

38.40 GTexel/s

Texture Rate

2.400 GTexel/s

-

FP16 (half)

-

1.536 TFLOPS

FP32 (float)

48.00 GFLOPS

-

FP64 (double)

-

Graphics Processor

Barts

GPU Name

RV620

Barts PRO (215-0798006)

GPU Variant

RV620 LE

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.181 billion

255 mm²

Die Size

67 mm²

Board Design

254W

TDP

25W

600 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

1x DVI 1x S-Video

2x 8-pin

Power Connectors

None

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

4.1

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