Radeon RX 6600 XT vs Radeon RX 9070 XT
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 16GB VRAM Radeon RX 9070 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6600 XT 's Advantages
Lower TDP (160W vs 304W)
Radeon RX 9070 XT 's Advantages
Released 3 years and 8 months late
Boost Clock has increased by 15% (2970MHz vs 2589MHz)
More VRAM (16GB vs 8GB)
Larger VRAM bandwidth (644.6GB/s vs 256.0GB/s)
2048 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6600 XT
10600
Radeon RX 9070 XT
+359%
48660
3DMark Time Spy
Radeon RX 6600 XT
9656
Radeon RX 9070 XT
+215%
30445
3DMark Time Spy Extreme
Radeon RX 6600 XT
4399
Radeon RX 9070 XT
+232%
14633
3DMark Speed Way
Radeon RX 6600 XT
1675
Radeon RX 9070 XT
+282%
6403
Graphics Card
Jul 2021
Release Date
Mar 2025
Navi II
Generation
Navi IV
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 5.0 x16
Clock Speeds
1968 MHz
Base Clock
1660 MHz
2589 MHz
Boost Clock
2970 MHz
2000 MHz
Memory Clock
2518 MHz
Memory
8GB
Memory Size
16GB
GDDR6
Memory Type
GDDR6
128bit
Memory Bus
256bit
256.0GB/s
Bandwidth
644.6GB/s
Render Config
32
Compute Units
64
2048
Shading Units
4096
128
TMUs
256
64
ROPs
128
-
Tensor Cores
128
32
RT Cores
64
128 KB per Array
L1 Cache
128 KB per Array
2 MB
L2 Cache
8 MB
32 MB
L3 Cache
64 MB
Theoretical Performance
165.7 GPixel/s
Pixel Rate
380.2 GPixel/s
331.4 GTexel/s
Texture Rate
760.3 GTexel/s
21.21 TFLOPS
FP16 (half)
97.32 TFLOPS
10.60 TFLOPS
FP32 (float)
48.66 TFLOPS
662.8 GFLOPS
FP64 (double)
1.521 TFLOPS
Board Design
160W
TDP
304W
450 W
Suggested PSU
700 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
1x HDMI 2.1b
3x DisplayPort 2.1a
1x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
Navi 23
GPU Name
Navi 48
Navi 23 XT
(215-130000006)
GPU Variant
Navi 48 XT
(215-176600315)
RDNA 2.0
Architecture
RDNA 4.0
TSMC
Foundry
TSMC
7 nm
Process Size
5 nm
11.06 billion
Transistors
53.9 billion
237 mm²
Die Size
357 mm²
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
6.7
Shader Model
6.8
