AMD Radeon HD 6790 vs ATI Radeon HD 3750

VS

AMD Radeon HD 6790

ATI Radeon HD 3750

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 512MB VRAM Radeon HD 3750 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6790 's Advantages

Released 2 years and 7 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 22.18GB/s)

680 additional rendering cores

ATI Radeon HD 3750 's Advantages

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 6790 +603%

1.344 TFLOPS

Radeon HD 3750

0.191 TFLOPS

Radeon HD 6790

VS

Radeon HD 3750

Graphics Card

Apr 2011

Release Date

Sep 2008

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

693 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

22.18GB/s

Render Config

10

Compute Units

3

-

800

Shading Units

120

40

TMUs

8

16

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

128 KB

-

Theoretical Performance

13.44 GPixel/s

Pixel Rate

3.184 GPixel/s

33.60 GTexel/s

Texture Rate

6.368 GTexel/s

-

1344 GFLOPS

FP32 (float)

191.0 GFLOPS

-

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

RV635

Barts LE (215-0798002)

GPU Variant

RV635 PRO (215-0682008)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.378 billion

255 mm²

Die Size

135 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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