AMD Radeon RX 8800 XT vs AMD Radeon HD 7990

VS

AMD Radeon RX 8800 XT

AMD Radeon HD 7990

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 8800 XT and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 8800 XT 's Advantages

Boost Clock has increased by 143% (2430MHz vs 1000MHz)

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (624.1GB/s vs 288.0GB/s)

2048 additional rendering cores

Lower TDP (220W vs 375W)

Score

Benchmark

FP32 (float)

Radeon RX 8800 XT +386%

19.91 TFLOPS

Radeon HD 7990

4.096 TFLOPS

Radeon RX 8800 XT

VS

Radeon HD 7990

Graphics Card

Unknown

Release Date

Apr 2013

Navi IV(RX 8000)

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1295 MHz

Base Clock

950 MHz

2430 MHz

Boost Clock

1000 MHz

2438 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

384bit

624.1GB/s

Bandwidth

288.0GB/s

Render Config

64

Compute Units

32

-

4096

Shading Units

2048

256

TMUs

128

96

ROPs

32

-

64

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

768 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

32.00 GPixel/s

622.1 GTexel/s

Texture Rate

128.0 GTexel/s

39.81 TFLOPS

FP16 (half)

-

19.91 TFLOPS

FP32 (float)

4.096 TFLOPS

622.1 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

220W

TDP

375W

550 W

Suggested PSU

750 W

1x HDMI 2.1a3x DisplayPort 2.1

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Navi 48

GPU Name

Malta

Navi 48 XT

GPU Variant

Malta XT (215-0849026)

RDNA 4.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

4 nm

Process Size

28 nm

Unknown

Transistors

4.313 billion

Unknown

Die Size

365 mm²

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

-

6.8

Shader Model

5.1

Related GPU Comparisons

1

AMD Radeon RX 8800 XT vs NVIDIA GeForce RTX 3070

2

AMD Radeon RX 8800 XT vs NVIDIA GeForce RTX 4070

3

AMD Radeon RX 8800 XT vs AMD Radeon Pro 5500 XT

4

AMD Radeon RX 8800 XT vs NVIDIA GeForce GT 1030

5

AMD Radeon RX 8800 XT vs AMD Radeon RX 6750 GRE 10 GB

6

AMD Radeon RX 8800 XT vs ATI FireMV 2400 PCIe x1

7

AMD Radeon RX 8800 XT vs AMD Radeon VII

8

AMD Radeon RX 8800 XT vs ATI Radeon HD 3830

9

AMD Radeon RX 8800 XT vs NVIDIA GeForce GTX 260 Core 216

10

AMD Radeon RX 8800 XT vs NVIDIA CMP 70HX

Related News

1

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

2

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps

3

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim

4

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

5

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

6

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

7

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip

8

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage

9

Apple Allegedly Cancels M4 Extreme, Originally Planned for Mac Pro with 64-Core CPU and 160-Core GPU

10

Cyberpunk 2077 Update 2.2: Intel Arrow Lake Gaming Performance Soars by 33%!