AMD Radeon RX 8800 XT vs ATI Radeon HD 3870 X2

VS

AMD Radeon RX 8800 XT

ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 8800 XT and 512MB VRAM Radeon HD 3870 X2 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 512GB)

Larger VRAM bandwidth (624.1GB/s vs 57.66GB/s)

3776 additional rendering cores

ATI Radeon HD 3870 X2 's Advantages

Lower TDP (165W vs 220W)

Score

Benchmark

FP32 (float)

Radeon RX 8800 XT +3670%

19.91 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon RX 8800 XT

VS

Radeon HD 3870 X2

Graphics Card

Unknown

Release Date

Jan 2008

Navi IV(RX 8000)

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1295 MHz

Base Clock

-

2430 MHz

Boost Clock

-

2438 MHz

Memory Clock

901 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

256bit

624.1GB/s

Bandwidth

57.66GB/s

Render Config

64

Compute Units

4

-

4096

Shading Units

320

256

TMUs

16

96

ROPs

16

-

64

RT Cores

-

128 KB per Array

L1 Cache

-

4 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

13.20 GPixel/s

622.1 GTexel/s

Texture Rate

13.20 GTexel/s

39.81 TFLOPS

FP16 (half)

-

19.91 TFLOPS

FP32 (float)

528.0 GFLOPS

622.1 GFLOPS

FP64 (double)

105.6 GFLOPS

Board Design

220W

TDP

165W

550 W

Suggested PSU

450 W

1x HDMI 2.1a3x DisplayPort 2.1

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Navi 48

GPU Name

R680

Navi 48 XT

GPU Variant

R680 XT (215-0708017)

RDNA 4.0

Architecture

TeraScale

TSMC

Foundry

TSMC

4 nm

Process Size

55 nm

Unknown

Transistors

0.666 billion

Unknown

Die Size

192 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

2.2

OpenCL

N/A

1.3

Vulkan

N/A

-

6.8

Shader Model

4.1

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