AMD Radeon HD 7990 vs NVIDIA GeForce GT 620

VS

AMD Radeon HD 7990 NVIDIA GeForce GT 620

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1024MB VRAM GeForce GT 620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 11 months late

Boost Clock1000MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (288.0GB/s vs 14.40GB/s)

1952 additional rendering cores

NVIDIA GeForce GT 620 's Advantages

Lower TDP (49W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +1422%

4.096 TFLOPS

GeForce GT 620

0.269 TFLOPS

Radeon HD 7990

VS

GeForce GT 620

Graphics Card

Apr 2013

Release Date

May 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

900 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

64bit

288.0GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

2

32

Compute Units

-

2048

Shading Units

96

128

TMUs

16

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

128 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

2.800 GPixel/s

128.0 GTexel/s

Texture Rate

11.20 GTexel/s

-

FP16 (half)

-

4.096 TFLOPS

FP32 (float)

268.8 GFLOPS

1024 GFLOPS

FP64 (double)

22.40 GFLOPS

Graphics Processor

Malta

GPU Name

GF108

Malta XT (215-0849026)

GPU Variant

GF108-100-KB-A1

GCN 1.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.585 billion

365 mm²

Die Size

116 mm²

Board Design

375W

TDP

49W

750 W

Suggested PSU

200 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

Related GPU Comparisons

1

AMD Radeon HD 7990 vs NVIDIA GeForce GTX 650 Ti

2

AMD Radeon HD 7990 vs ATI Radeon HD 2900 GT

3

AMD Radeon HD 7990 vs NVIDIA TITAN Xp

4

AMD Radeon HD 7990 vs NVIDIA GeForce GTX 1060 3 GB

5

AMD Radeon HD 7990 vs NVIDIA GeForce GTX 285 Mac Edition

6

AMD Radeon HD 7990 vs NVIDIA CMP 100HX-210

7

AMD Radeon HD 7990 vs ATI Radeon HD 3450

8

AMD Radeon HD 7990 vs AMD Radeon RX 7900 XT

9

AMD Radeon HD 7990 vs AMD Radeon HD 6230

10

AMD Radeon HD 7990 vs NVIDIA GeForce GTX 1080

Related News

1

AMD Ryzen 9000X3D Series to Feature Fully Unlocked Overclocking; DDR5-6400: The 'Sweet Spot' for Zen 5 Memory Speeds

2

Intel Z890 Motherboard Specs Leaked: Farewell to DDR4 Memory

3

AMD Ryzen 9000 Series Now Available for Pre-order in Europe: 9950X Priced at €660, Shipping by August 2

4

AMD's Latest Breakthrough Technology Could Change the Game in the Future

5

Researchers Utilize NVIDIA Omniverse Platform to Analyze and Improve 3D Stacked Chip Designs

6

TSMC to Receive Over 60 EUV Lithography Machines Over the Next Two Years, Investing More Than $12.3 Billion

7

Samsung's Own 3nm Yield is Disheartening: Galaxy S25 May Introduce MediaTek for the First Time

8

AMD Ryzen 9000 DDR5 Memory Frequency Soars: Reaches 8000MHz with All Four Slots Occupied

9

Snapdragon 8 Gen 4 to Feature Frame Interpolation for GPU: A Game-Changing Experience

10

Intel Adds 5 New Device IDs to Latest Linux Xe Kernel in Preparation for Battlemage