AMD Radeon RX 7990 XTX vs AMD Radeon RX 6600 XT

VS

AMD Radeon RX 7990 XTX

AMD Radeon RX 6600 XT

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7990 XTX and 8GB VRAM Radeon RX 6600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock has increased by 39% (3599MHz vs 2589MHz)

More VRAM (24GB vs 8GB)

Larger VRAM bandwidth (1152GB/s vs 256.0GB/s)

4096 additional rendering cores

AMD Radeon RX 6600 XT 's Advantages

Lower TDP (160W vs 405W)

Score

Benchmark

FP32 (float)

Radeon RX 7990 XTX +734%

88.45 TFLOPS

Radeon RX 6600 XT

10.6 TFLOPS

Radeon RX 7990 XTX

VS

Radeon RX 6600 XT

Graphics Card

Unknown

Release Date

Jul 2021

Navi III

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

2500 MHz

Base Clock

1968 MHz

3599 MHz

Boost Clock

2589 MHz

3000 MHz

Memory Clock

2000 MHz

Memory

24GB

Memory Size

8GB

GDDR6

Memory Type

GDDR6

384bit

Memory Bus

128bit

1152GB/s

Bandwidth

256.0GB/s

Render Config

96

Compute Units

32

-

6144

Shading Units

2048

384

TMUs

128

192

ROPs

64

-

96

RT Cores

32

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

2 MB

192 MB

L3 Cache

32 MB

Theoretical Performance

691.0 GPixel/s

Pixel Rate

165.7 GPixel/s

1382 GTexel/s

Texture Rate

331.4 GTexel/s

176.9 TFLOPS

FP16 (half)

21.21 TFLOPS

88.45 TFLOPS

FP32 (float)

10.60 TFLOPS

2.764 TFLOPS

FP64 (double)

662.8 GFLOPS

Board Design

405W

TDP

160W

800 W

Suggested PSU

450 W

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

3x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Navi 31

GPU Name

Navi 23

Navi 31 XTX+

GPU Variant

Navi 23 XT (215-130000006)

RDNA 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

7 nm

57.7 billion

Transistors

11.06 billion

529 mm²

Die Size

237 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.3

-

6.7

Shader Model

6.7

Related GPU Comparisons

1

AMD Radeon RX 7990 XTX vs ATI Radeon HD 4730

2

AMD Radeon RX 7990 XTX vs AMD Radeon HD 6970

3

AMD Radeon RX 7990 XTX vs AMD Radeon Pro Duo

4

AMD Radeon RX 7990 XTX vs NVIDIA GeForce GTX 1660 SUPER

5

AMD Radeon RX 7990 XTX vs NVIDIA GeForce GTX 460 SE v2

6

AMD Radeon RX 7990 XTX vs AMD Radeon R7 265

7

AMD Radeon RX 7990 XTX vs NVIDIA GeForce 210 Rev. 2

8

AMD Radeon RX 7990 XTX vs ATI FirePro V8700

9

AMD Radeon RX 7990 XTX vs NVIDIA GeForce GT 130 OEM

10

AMD Radeon RX 7990 XTX vs NVIDIA GeForce 9500 GT Mac Edition

Related News

1

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

2

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

3

CXMT Reportedly Achieves 80% Yield in DDR5 Production

4

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

5

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

6

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

7

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

8

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

9

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

10

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