AMD Radeon RX 6600 vs AMD Radeon R9 290X
GPU Specs Compare
Graphics Card
Release Date
Oct 2021
Oct 2013
Generation
Navi II
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1626 MHz
-
Boost Clock
2491 MHz
-
Memory Clock
1750 MHz
1250 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
512bit
Bandwidth
224.0GB/s
320.0GB/s
Render Config
Compute Units
28
44
Shading Units
1792
2816
TMUs
112
176
ROPs
64
64
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
1024 KB
L3 Cache
32 MB
-
Theoretical Performance
Pixel Rate
159.4 GPixel/s
64.00 GPixel/s
Texture Rate
279.0 GTexel/s
176.0 GTexel/s
FP16 (half)
17.86 TFLOPS
-
FP32 (float)
8.928 TFLOPS
5.632 TFLOPS
FP64 (double)
558.0 GFLOPS
704.0 GFLOPS
Graphics Processor
GPU Name
Navi 23
Hawaii
GPU Variant
Navi 23 XL(215-130000016)
Hawaii XT(215-0852000)
Architecture
RDNA 2.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
11.06 billion
6.2 billion
Die Size
237 mm²
438 mm²
Board Design
TDP
132W
290W
Suggested PSU
300 W
600 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 8-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.3
1.2.170
Shader Model
6.5
6.5