Home GPU Comparison AMD Radeon RX 6600 XT vs AMD Radeon RX 6900 XT

AMD Radeon RX 6600 XT vs AMD Radeon RX 6900 XT

AMD Radeon RX 6600 XT
VS
AMD Radeon RX 6900 XT
AMD Radeon RX 6600 XT AMD Radeon RX 6900 XT
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages
Released 9 months late
Boost Clock has increased by 15% (2589MHz vs 2250MHz)
Lower TDP (160W vs 300W)
AMD Radeon RX 6900 XT 's Advantages
More VRAM (16GB vs 8GB)
Larger VRAM bandwidth (512.0GB/s vs 256.0GB/s)
3072 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon RX 6600 XT
10.6 TFLOPS
Radeon RX 6900 XT +117%
23.04 TFLOPS
3DMark Time Spy
Radeon RX 6600 XT
9578
Radeon RX 6900 XT +118%
20915
Blender
Radeon RX 6600 XT
1187
Radeon RX 6900 XT +142%
2883
Shadow of the Tomb Raider 2160p
Radeon RX 6600 XT
38
Radeon RX 6900 XT +107%
79
Shadow of the Tomb Raider 1440p
Radeon RX 6600 XT
72
Radeon RX 6900 XT +97%
142
Shadow of the Tomb Raider 1080p
Radeon RX 6600 XT
119
Radeon RX 6900 XT +63%
194
Cyberpunk 2077 2160p
Radeon RX 6600 XT
29
Radeon RX 6900 XT +127%
66
Cyberpunk 2077 1440p
Radeon RX 6600 XT
36
Radeon RX 6900 XT +113%
77
Cyberpunk 2077 1080p
Radeon RX 6600 XT
58
Radeon RX 6900 XT +100%
116
Battlefield 5 2160p
Radeon RX 6600 XT
58
Radeon RX 6900 XT +96%
114
Battlefield 5 1440p
Radeon RX 6600 XT
111
Radeon RX 6900 XT +80%
200
Battlefield 5 1080p
Radeon RX 6600 XT
144
Radeon RX 6900 XT +39%
201
GTA 5 2160p
Radeon RX 6600 XT
61
Radeon RX 6900 XT +108%
127
GTA 5 1440p
Radeon RX 6600 XT
82
Radeon RX 6900 XT +85%
152
GTA 5 1080p
Radeon RX 6600 XT
149
Radeon RX 6900 XT +26%
189
Horizon Forbidden West 1080p
Radeon RX 6600 XT
64
Radeon RX 6900 XT +78%
114
Horizon Forbidden West 1440p
Radeon RX 6600 XT
48
Radeon RX 6900 XT +85%
89
Horizon Forbidden West 2160p
Radeon RX 6600 XT
26
Radeon RX 6900 XT +115%
56
Radeon RX 6600 XT
VS
Radeon RX 6900 XT

Graphics Card

Jul 2021
Release Date
Oct 2020
Navi II
Generation
Navi II
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 4.0 x16

Clock Speeds

1968 MHz
Base Clock
1825 MHz
2589 MHz
Boost Clock
2250 MHz
2000 MHz
Memory Clock
2000 MHz

Memory

8GB
Memory Size
16GB
GDDR6
Memory Type
GDDR6
128bit
Memory Bus
256bit
256.0GB/s
Bandwidth
512.0GB/s

Render Config

-
SM Count
-
32
Compute Units
80
2048
Shading Units
5120
128
TMUs
320
64
ROPs
128
-
Tensor Cores
-
32
RT Cores
80
128 KB per Array
L1 Cache
128 KB per Array
2 MB
L2 Cache
4 MB

Theoretical Performance

165.7 GPixel/s
Pixel Rate
288.0 GPixel/s
331.4 GTexel/s
Texture Rate
720.0 GTexel/s
21.21 TFLOPS
FP16 (half)
46.08 TFLOPS
10.60 TFLOPS
FP32 (float)
23.04 TFLOPS
662.8 GFLOPS
FP64 (double)
1440 GFLOPS

Graphics Processor

Navi 23
GPU Name
Navi 21
Navi 23 XT (215-130000006)
GPU Variant
Navi 21 XTX (215-121000167)
RDNA 2.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
7 nm
Process Size
7 nm
11.06 billion
Transistors
26.8 billion
237 mm²
Die Size
520 mm²

Board Design

160W
TDP
300W
450 W
Suggested PSU
700 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
1x 8-pin
Power Connectors
2x 8-pin

Graphics Features

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

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