AMD Radeon HD 8870 OEM vs AMD Radeon RX 6700 XT

VS

AMD Radeon HD 8870 OEM AMD Radeon RX 6700 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 12GB VRAM Radeon RX 6700 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

Lower TDP (175W vs 230W)

AMD Radeon RX 6700 XT 's Advantages

Released 8 years and 2 months late

Boost Clock2581MHz

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 153.6GB/s)

1280 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon RX 6700 XT +416%

13.21 TFLOPS

Radeon HD 8870 OEM

VS

Radeon RX 6700 XT

Graphics Card

Jan 2013

Release Date

Mar 2021

Sea Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2321 MHz

-

Boost Clock

2581 MHz

1200 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

192bit

153.6GB/s

Bandwidth

384.0GB/s

Render Config

-

SM Count

-

20

Compute Units

40

1280

Shading Units

2560

80

TMUs

160

32

ROPs

64

-

Tensor Cores

-

RT Cores

40

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

3 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

165.2 GPixel/s

80.00 GTexel/s

Texture Rate

413.0 GTexel/s

-

FP16 (half)

26.43 TFLOPS

2.560 TFLOPS

FP32 (float)

13.21 TFLOPS

160.0 GFLOPS

FP64 (double)

825.9 GFLOPS

Graphics Processor

Pitcairn

GPU Name

Navi 22

Pitcairn XT (215-0828047)

GPU Variant

Navi 22 XT (215-127000006)

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

2.8 billion

Transistors

17.2 billion

212 mm²

Die Size

335 mm²

Board Design

175W

TDP

230W

450 W

Suggested PSU

550 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.3

-

CUDA

-

5.1

Shader Model

6.5

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