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

VS

AMD Radeon HD 7870 GHz Edition

AMD Radeon RX 7900 GRE

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 16GB VRAM Radeon RX 7900 GRE 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 260W)

AMD Radeon RX 7900 GRE 's Advantages

Released 11 years and 4 months late

Boost Clock2245MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (576.0GB/s vs 153.6GB/s)

3840 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition

2.56 TFLOPS

Radeon RX 7900 GRE +1696%

45.98 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon RX 7900 GRE

Graphics Card

Mar 2012

Release Date

Jul 2023

Southern Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1287 MHz

-

Boost Clock

2245 MHz

1200 MHz

Memory Clock

2250 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

576.0GB/s

Render Config

20

Compute Units

80

-

1280

Shading Units

5120

80

TMUs

320

32

ROPs

160

-

RT Cores

80

16 KB (per CU)

L1 Cache

256 KB per Array

512 KB

L2 Cache

6 MB

-

L3 Cache

64 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

359.2 GPixel/s

80.00 GTexel/s

Texture Rate

718.4 GTexel/s

-

FP16 (half)

91.96 TFLOPS

2.560 TFLOPS

FP32 (float)

45.98 TFLOPS

160.0 GFLOPS

FP64 (double)

1437 GFLOPS

Board Design

175W

TDP

260W

450 W

Suggested PSU

600 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 Processor

Pitcairn

GPU Name

Navi 31

Pitcairn XT (215-0828047)

GPU Variant

Navi 31 XL (215-145000206)

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

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

-

5.1

Shader Model

6.7

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