AMD Radeon RX 6700 XT vs AMD Radeon HD 7870 XT

VS

AMD Radeon RX 6700 XT AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 XT and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6700 XT 's Advantages

Released 8 years and 4 months late

Boost Clock has increased by 165% (2581MHz vs 975MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 192.0GB/s)

1024 additional rendering cores

AMD Radeon HD 7870 XT 's Advantages

Lower TDP (185W vs 230W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 XT +341%

13.21 TFLOPS

Radeon HD 7870 XT

2.995 TFLOPS

Radeon RX 6700 XT

VS

Radeon HD 7870 XT

Graphics Card

Mar 2021

Release Date

Nov 2012

Navi II

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2321 MHz

Base Clock

925 MHz

2581 MHz

Boost Clock

975 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

12GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

256bit

384.0GB/s

Bandwidth

192.0GB/s

Render Config

-

SM Count

-

40

Compute Units

24

2560

Shading Units

1536

160

TMUs

96

64

ROPs

32

-

Tensor Cores

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

512 KB

Theoretical Performance

165.2 GPixel/s

Pixel Rate

31.20 GPixel/s

413.0 GTexel/s

Texture Rate

93.60 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

2.995 TFLOPS

825.9 GFLOPS

FP64 (double)

748.8 GFLOPS

Graphics Processor

Navi 22

GPU Name

Tahiti

Navi 22 XT (215-127000006)

GPU Variant

Tahiti LE (215-0821122)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

4.313 billion

335 mm²

Die Size

352 mm²

Board Design

230W

TDP

185W

550 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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