AMD Radeon RX 7800 vs AMD Radeon HD 7950

VS

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800 's Advantages

Released 11 years late

Boost Clock2800MHz

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (576.0GB/s vs 240.0GB/s)

2048 additional rendering cores

AMD Radeon HD 7950 's Advantages

Lower TDP (200W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 +1201%

37.32 TFLOPS

Radeon HD 7950

2.867 TFLOPS

Radeon RX 7800

VS

Radeon HD 7950

Graphics Card

Jan 2023

Release Date

Jan 2012

Navi III

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1800 MHz

Base Clock

-

2800 MHz

Boost Clock

-

2250 MHz

Memory Clock

1250 MHz

Memory

16GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

384bit

576.0GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

60

Compute Units

28

3840

Shading Units

1792

240

TMUs

112

128

ROPs

32

-

Tensor Cores

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

768 KB

Theoretical Performance

358.4 GPixel/s

Pixel Rate

25.60 GPixel/s

672.0 GTexel/s

Texture Rate

89.60 GTexel/s

86.02 TFLOPS

FP16 (half)

-

43.01 TFLOPS

FP32 (float)

2.867 TFLOPS

1344 GFLOPS

FP64 (double)

716.8 GFLOPS

Graphics Processor

Navi 32

GPU Name

Tahiti

Navi 32 XT

GPU Variant

Tahiti PRO (215-0821056)

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

Unknown

Transistors

4.313 billion

346 mm²

Die Size

352 mm²

Board Design

300W

TDP

200W

700 W

Suggested PSU

550 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

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

2x 8-pin

Power Connectors

2x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

5.1

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