AMD Radeon HD 6990 vs AMD Radeon RX 8800 XT

VS

AMD Radeon HD 6990

AMD Radeon RX 8800 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 16GB VRAM Radeon RX 8800 XT 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 Clock2430MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (624.1GB/s vs 160.0GB/s)

2560 additional rendering cores

Lower TDP (220W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

Radeon RX 8800 XT +680%

19.91 TFLOPS

Radeon HD 6990

VS

Radeon RX 8800 XT

Graphics Card

Mar 2011

Release Date

Unknown

Northern Islands

Generation

Navi IV(RX 8000)

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1295 MHz

-

Boost Clock

2430 MHz

1250 MHz

Memory Clock

2438 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

624.1GB/s

Render Config

24

Compute Units

64

-

1536

Shading Units

4096

96

TMUs

256

32

ROPs

96

-

RT Cores

64

8 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

4 MB

-

L3 Cache

64 MB

Theoretical Performance

26.56 GPixel/s

Pixel Rate

233.3 GPixel/s

79.68 GTexel/s

Texture Rate

622.1 GTexel/s

-

FP16 (half)

39.81 TFLOPS

2.550 TFLOPS

FP32 (float)

19.91 TFLOPS

637.4 GFLOPS

FP64 (double)

622.1 GFLOPS

Board Design

375W

TDP

220W

750 W

Suggested PSU

550 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x HDMI 2.1a3x DisplayPort 2.1

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Antilles

GPU Name

Navi 48

Antilles XT (215-0807027)

GPU Variant

Navi 48 XT

TeraScale 3

Architecture

RDNA 4.0

TSMC

Foundry

TSMC

40 nm

Process Size

4 nm

2.64 billion

Transistors

Unknown

389 mm²

Die Size

Unknown

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.8

Related GPU Comparisons

1

AMD Radeon HD 6990 vs MTT S70

2

AMD Radeon HD 6990 vs AMD Radeon HD 6490

3

AMD Radeon HD 6990 vs AMD Radeon 540

4

AMD Radeon HD 6990 vs NVIDIA A40 PCIe

5

AMD Radeon HD 6990 vs NVIDIA GeForce 9400 GT

6

AMD Radeon HD 6990 vs NVIDIA GeForce 9400 GT PCI

7

AMD Radeon HD 6990 vs AMD Radeon 550X

8

AMD Radeon HD 6990 vs NVIDIA GeForce GTX 680 Mac Edition

9

AMD Radeon HD 6990 vs ATI Radeon X550 XT

10

AMD Radeon HD 6990 vs NVIDIA GeForce GTX 1070 GDDR5X

Related News

1

AMD's Thunderous Strike: Ryzen 9 9950X3D Performance Scores Revealed for the First Time!

2

Continuous Decline in DRAM Memory Prices: Downward Trend Intensifies

3

NVIDIA GB202 Chip Unveiled for the First Time, to be Used in RTX 5090 with 512-bit GDDR7 Memory

4

Strix Halo Integrated Graphics Score Appears on Passmark, Currently Slightly Below RTX 3060 12GB

5

AMD Unveils New RX 9070 XT Graphics Card Performance: Positioned Between RX 7900 GRE and RX 7900 XT

6

Double the Excitement! AMD FSR 4.0 to Launch Alongside RX 9070 XT Graphics Card

7

CPU-Z Minor Update: Support for Intel's Four New Products and New Memory

8

CXMT Reportedly Achieves 80% Yield in DDR5 Production

9

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

10

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