AMD Radeon HD 7870 GHz Edition vs AMD Radeon RX 7900 XT

VS

AMD Radeon HD 7870 GHz Edition AMD Radeon RX 7900 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 20GB VRAM Radeon RX 7900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 GHz Edition 's Advantages

Lower TDP (175W vs 300W)

AMD Radeon RX 7900 XT 's Advantages

Released 10 years and 8 months late

Boost Clock2394MHz

More VRAM (20GB vs 2GB)

Larger VRAM bandwidth (800.0GB/s vs 153.6GB/s)

4096 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition

2.56 TFLOPS

Radeon RX 7900 XT +1910%

51.48 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon RX 7900 XT

Graphics Card

Mar 2012

Release Date

Nov 2022

Southern Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1387 MHz

-

Boost Clock

2394 MHz

1200 MHz

Memory Clock

2500 MHz

Memory

2GB

Memory Size

20GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

320bit

153.6GB/s

Bandwidth

800.0GB/s

Render Config

-

SM Count

-

20

Compute Units

84

1280

Shading Units

5376

80

TMUs

336

32

ROPs

192

-

Tensor Cores

-

RT Cores

84

16 KB (per CU)

L1 Cache

256 KB per Array

512 KB

L2 Cache

6 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

459.6 GPixel/s

80.00 GTexel/s

Texture Rate

804.4 GTexel/s

-

FP16 (half)

103.0 TFLOPS

2.560 TFLOPS

FP32 (float)

51.48 TFLOPS

160.0 GFLOPS

FP64 (double)

1.609 TFLOPS

Graphics Processor

Pitcairn

GPU Name

Navi 31

Pitcairn XT (215-0828047)

GPU Variant

Navi 31 XT (215-145000156)

GCN 1.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

2.8 billion

Transistors

57.7 billion

212 mm²

Die Size

529 mm²

Board Design

175W

TDP

300W

450 W

Suggested PSU

700 W

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

Outputs

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

2x 6-pin

Power Connectors

2x 8-pin

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.2

1.2

Vulkan

1.3

-

CUDA

-

5.1

Shader Model

6.7

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