AMD Radeon HD 6870 1600SP Edition vs ATI Radeon HD 3650

VS

AMD Radeon HD 6870 1600SP Edition ATI Radeon HD 3650

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 256MB VRAM Radeon HD 3650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 1600SP Edition 's Advantages

Released 5 years late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (134.4GB/s vs 25.60GB/s)

1480 additional rendering cores

ATI Radeon HD 3650 's Advantages

Lower TDP (65W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +1463%

2.72 TFLOPS

Radeon HD 3650

0.174 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon HD 3650

Graphics Card

Jan 2013

Release Date

Jan 2008

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

20

Compute Units

3

1600

Shading Units

120

80

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

128 KB

Theoretical Performance

27.20 GPixel/s

Pixel Rate

2.900 GPixel/s

68.00 GTexel/s

Texture Rate

5.800 GTexel/s

-

FP16 (half)

-

2.720 TFLOPS

FP32 (float)

174.0 GFLOPS

544.0 GFLOPS

FP64 (double)

-

Graphics Processor

Cypress

GPU Name

RV635

Cypress XT (215-0735033)

GPU Variant

RV635 PRO (215-0682008)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.154 billion

Transistors

0.378 billion

334 mm²

Die Size

135 mm²

Board Design

175W

TDP

65W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-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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