Home GPU Comparison AMD Radeon RX 6650 XT vs AMD Radeon RX 7990 XTX

AMD Radeon RX 6650 XT vs AMD Radeon RX 7990 XTX

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6650 XT and 24GB VRAM Radeon RX 7990 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6650 XT 's Advantages
Lower TDP (176W vs 405W)
AMD Radeon RX 7990 XTX 's Advantages
Boost Clock has increased by 37% (3599MHz vs 2635MHz)
More VRAM (24GB vs 8GB)
Larger VRAM bandwidth (1152GB/s vs 280.3GB/s)
4096 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon RX 6650 XT
10.79 TFLOPS
Radeon RX 7990 XTX +719%
88.45 TFLOPS
VS

Graphics Card

May 2022
Release Date
Unknown
Navi II
Generation
Navi III
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 4.0 x16

Clock Speeds

2055 MHz
Base Clock
2500 MHz
2635 MHz
Boost Clock
3599 MHz
2190 MHz
Memory Clock
3000 MHz

Memory

8GB
Memory Size
24GB
GDDR6
Memory Type
GDDR6
128bit
Memory Bus
384bit
280.3GB/s
Bandwidth
1152GB/s

Render Config

-
SM Count
-
32
Compute Units
96
2048
Shading Units
6144
128
TMUs
384
64
ROPs
192
-
Tensor Cores
-
32
RT Cores
96
128 KB per Array
L1 Cache
256 KB per Array
2 MB
L2 Cache
6 MB

Theoretical Performance

168.6 GPixel/s
Pixel Rate
691.0 GPixel/s
337.3 GTexel/s
Texture Rate
1382 GTexel/s
21.59 TFLOPS
FP16 (half)
176.9 TFLOPS
10.79 TFLOPS
FP32 (float)
88.45 TFLOPS
674.6 GFLOPS
FP64 (double)
2.764 TFLOPS

Graphics Processor

Navi 23
GPU Name
Navi 31
Navi 23 KXT (215-130000136)
GPU Variant
Navi 31 XTX+
RDNA 2.0
Architecture
RDNA 3.0
TSMC
Foundry
TSMC
7 nm
Process Size
5 nm
11.06 billion
Transistors
57.7 billion
237 mm²
Die Size
529 mm²

Board Design

176W
TDP
405W
450 W
Suggested PSU
800 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C
1x 8-pin
Power Connectors
3x 8-pin

Graphics Features

12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.1
OpenCL
2.2
1.3
Vulkan
1.3
-
CUDA
-
6.5
Shader Model
6.7

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