AMD Radeon RX 8800 XT vs AMD Radeon HD 7870 GHz Edition

VS

AMD Radeon RX 8800 XT

AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 8800 XT and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 8800 XT 's Advantages

Boost Clock2430MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (624.1GB/s vs 153.6GB/s)

2816 additional rendering cores

AMD Radeon HD 7870 GHz Edition 's Advantages

Lower TDP (175W vs 220W)

Score

Benchmark

FP32 (float)

Radeon RX 8800 XT +677%

19.91 TFLOPS

Radeon HD 7870 GHz Edition

2.56 TFLOPS

Radeon RX 8800 XT

VS

Radeon HD 7870 GHz Edition

Graphics Card

Unknown

Release Date

Mar 2012

Navi IV(RX 8000)

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1295 MHz

Base Clock

-

2430 MHz

Boost Clock

-

2438 MHz

Memory Clock

1200 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

624.1GB/s

Bandwidth

153.6GB/s

Render Config

64

Compute Units

20

-

4096

Shading Units

1280

256

TMUs

80

96

ROPs

32

-

64

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

512 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

32.00 GPixel/s

622.1 GTexel/s

Texture Rate

80.00 GTexel/s

39.81 TFLOPS

FP16 (half)

-

19.91 TFLOPS

FP32 (float)

2.560 TFLOPS

622.1 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

220W

TDP

175W

550 W

Suggested PSU

450 W

1x HDMI 2.1a3x DisplayPort 2.1

Outputs

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

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Navi 48

GPU Name

Pitcairn

Navi 48 XT

GPU Variant

Pitcairn XT (215-0828047)

RDNA 4.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

4 nm

Process Size

28 nm

Unknown

Transistors

2.8 billion

Unknown

Die Size

212 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

6.8

Shader Model

5.1

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