AMD Radeon HD 7990 vs NVIDIA A40 PCIe

VS

AMD Radeon HD 7990

NVIDIA A40 PCIe

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 48GB VRAM A40 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Released 7 years and 6 months late

Boost Clock has increased by 74% (1740MHz vs 1000MHz)

More VRAM (48GB vs 3GB)

Larger VRAM bandwidth (695.8GB/s vs 288.0GB/s)

8704 additional rendering cores

Lower TDP (300W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990

4.096 TFLOPS

A40 PCIe +813%

37.42 TFLOPS

Radeon HD 7990

VS

A40 PCIe

Graphics Card

Apr 2013

Release Date

Oct 2020

Southern Islands

Generation

Tesla

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

950 MHz

Base Clock

1305 MHz

1000 MHz

Boost Clock

1740 MHz

1500 MHz

Memory Clock

1812 MHz

Memory

3GB

Memory Size

48GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

384bit

288.0GB/s

Bandwidth

695.8GB/s

Render Config

32

Compute Units

-

SM Count

84

2048

Shading Units

10752

128

TMUs

336

32

ROPs

112

-

Tensor Cores

336

-

RT Cores

84

16 KB (per CU)

L1 Cache

128 KB (per SM)

768 KB

L2 Cache

6 MB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

194.9 GPixel/s

128.0 GTexel/s

Texture Rate

584.6 GTexel/s

-

FP16 (half)

37.42 TFLOPS

4.096 TFLOPS

FP32 (float)

37.42 TFLOPS

1024 GFLOPS

FP64 (double)

584.6 GFLOPS

Board Design

375W

TDP

300W

750 W

Suggested PSU

700 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

3x DisplayPort 1.4a

2x 8-pin

Power Connectors

8-pin EPS

Graphics Processor

Malta

GPU Name

GA102

Malta XT (215-0849026)

GPU Variant

-

GCN 1.0

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

4.313 billion

Transistors

28.3 billion

365 mm²

Die Size

628 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

8.6

5.1

Shader Model

6.6

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