AMD Radeon HD 7870 XT vs ATI Radeon HD 4250

VS

AMD Radeon HD 7870 XT ATI Radeon HD 4250

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 512MB VRAM Radeon HD 4250 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Released 3 years and 9 months late

Boost Clock975MHz

Larger VRAM bandwidth (192.0GB/s vs 6.336GB/s)

1496 additional rendering cores

ATI Radeon HD 4250 's Advantages

Lower TDP (25W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +6139%

2.995 TFLOPS

Radeon HD 4250

0.048 TFLOPS

Radeon HD 7870 XT

VS

Radeon HD 4250

Graphics Card

Nov 2012

Release Date

Feb 2009

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

396 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

192.0GB/s

Bandwidth

6.336GB/s

Render Config

-

SM Count

-

24

Compute Units

2

1536

Shading Units

40

96

TMUs

4

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

Theoretical Performance

31.20 GPixel/s

Pixel Rate

2.376 GPixel/s

93.60 GTexel/s

Texture Rate

2.376 GTexel/s

-

FP16 (half)

-

2.995 TFLOPS

FP32 (float)

47.52 GFLOPS

748.8 GFLOPS

FP64 (double)

-

Graphics Processor

Tahiti

GPU Name

RV620

Tahiti LE (215-0821122)

GPU Variant

RV620 LE

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.181 billion

352 mm²

Die Size

67 mm²

Board Design

185W

TDP

25W

450 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

4.1

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