NVIDIA GeForce RTX 4080 vs AMD Radeon HD 7990

VS

NVIDIA GeForce RTX 4080 AMD Radeon HD 7990

We compared two Desktop platform GPUs: 16GB VRAM GeForce RTX 4080 and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4080 's Advantages

Released 9 years and 5 months late

Boost Clock has increased by 150% (2505MHz vs 1000MHz)

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (716.8GB/s vs 288.0GB/s)

7680 additional rendering cores

Lower TDP (320W vs 375W)

Score

Benchmark

FP32 (float)

GeForce RTX 4080 +1089%

48.74 TFLOPS

Radeon HD 7990

4.096 TFLOPS

GeForce RTX 4080

VS

Radeon HD 7990

Graphics Card

Sep 2022

Release Date

Apr 2013

GeForce 40

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2205 MHz

Base Clock

950 MHz

2505 MHz

Boost Clock

1000 MHz

1400 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

3GB

GDDR6X

Memory Type

GDDR5

256bit

Memory Bus

384bit

716.8GB/s

Bandwidth

288.0GB/s

Render Config

76

SM Count

-

Compute Units

32

9728

Shading Units

2048

304

TMUs

128

112

ROPs

32

304

Tensor Cores

-

76

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

64 MB

L2 Cache

768 KB

Theoretical Performance

280.6 GPixel/s

Pixel Rate

32.00 GPixel/s

761.5 GTexel/s

Texture Rate

128.0 GTexel/s

48.74 TFLOPS

FP16 (half)

-

48.74 TFLOPS

FP32 (float)

4.096 TFLOPS

761.5 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

AD103

GPU Name

Malta

AD103-300-A1

GPU Variant

Malta XT (215-0849026)

Ada Lovelace

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

45.9 billion

Transistors

4.313 billion

379 mm²

Die Size

365 mm²

Board Design

320W

TDP

375W

700 W

Suggested PSU

750 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 16-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

8.9

CUDA

-

6.7

Shader Model

5.1

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