AMD Radeon HD 7990 vs AMD Radeon RX 7950 XT

VS

AMD Radeon HD 7990 AMD Radeon RX 7950 XT

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 20GB VRAM Radeon RX 7950 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7950 XT 's Advantages

Boost Clock has increased by 200% (3000MHz vs 1000MHz)

More VRAM (20GB vs 3GB)

Larger VRAM bandwidth (800.0GB/s vs 288.0GB/s)

3328 additional rendering cores

Lower TDP (300W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990

4.096 TFLOPS

Radeon RX 7950 XT +1474%

64.51 TFLOPS

Radeon HD 7990

VS

Radeon RX 7950 XT

Graphics Card

Apr 2013

Release Date

Unknown

Southern Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

950 MHz

Base Clock

2000 MHz

1000 MHz

Boost Clock

3000 MHz

1500 MHz

Memory Clock

2500 MHz

Memory

3GB

Memory Size

20GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

320bit

288.0GB/s

Bandwidth

800.0GB/s

Render Config

-

SM Count

-

32

Compute Units

84

2048

Shading Units

5376

128

TMUs

336

32

ROPs

192

-

Tensor Cores

-

RT Cores

84

16 KB (per CU)

L1 Cache

256 KB per Array

768 KB

L2 Cache

6 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

576.0 GPixel/s

128.0 GTexel/s

Texture Rate

1008 GTexel/s

-

FP16 (half)

129.0 TFLOPS

4.096 TFLOPS

FP32 (float)

64.51 TFLOPS

1024 GFLOPS

FP64 (double)

2.016 TFLOPS

Graphics Processor

Malta

GPU Name

Navi 31

Malta XT (215-0849026)

GPU Variant

Navi 31 XT+

GCN 1.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

4.313 billion

Transistors

57.7 billion

365 mm²

Die Size

529 mm²

Board Design

375W

TDP

300W

750 W

Suggested PSU

700 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-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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