ATI Radeon HD 3850 vs AMD Radeon R9 280X2

VS

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 and 3GB VRAM Radeon R9 280X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3850 's Advantages

Lower TDP (75W vs 375W)

AMD Radeon R9 280X2 's Advantages

Boost Clock1000MHz

Larger VRAM bandwidth (288.0GB/s vs 53.12GB/s)

1728 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3850

0.428 TFLOPS

Radeon R9 280X2 +857%

4.096 TFLOPS

Radeon HD 3850

VS

Radeon R9 280X2

Graphics Card

Nov 2007

Release Date

Unknown

Radeon R600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

950 MHz

-

Boost Clock

1000 MHz

830 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

3GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

384bit

53.12GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

4

Compute Units

32

320

Shading Units

2048

16

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

10.69 GPixel/s

Pixel Rate

32.00 GPixel/s

10.69 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

427.5 GFLOPS

FP32 (float)

4.096 TFLOPS

85.50 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

RV670

GPU Name

Tahiti

RV670 PRO (215-0708003)

GPU Variant

Tahiti XTL (215-0821065)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

4.313 billion

192 mm²

Die Size

352 mm²

Board Design

75W

TDP

375W

250 W

Suggested PSU

750 W

2x DVI 1x S-Video

Outputs

6x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

3x 8-pin

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

4.1

Shader Model

5.1

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