AMD Radeon RX 6600 vs AMD Radeon R7 265
GPU Specs Compare
Graphics Card
Release Date
Oct 2021
Feb 2014
Generation
Navi II
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1626 MHz
900 MHz
Boost Clock
2491 MHz
925 MHz
Memory Clock
1750 MHz
1400 MHz
Memory
Memory Size
8GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
256bit
Bandwidth
224.0GB/s
179.2GB/s
Render Config
Compute Units
28
16
Shading Units
1792
1024
TMUs
112
64
ROPs
64
32
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
512 KB
L3 Cache
32 MB
-
Theoretical Performance
Pixel Rate
159.4 GPixel/s
29.60 GPixel/s
Texture Rate
279.0 GTexel/s
59.20 GTexel/s
FP16 (half)
17.86 TFLOPS
-
FP32 (float)
8.928 TFLOPS
1.894 TFLOPS
FP64 (double)
558.0 GFLOPS
118.4 GFLOPS
Graphics Processor
GPU Name
Navi 23
Pitcairn
GPU Variant
Navi 23 XL(215-130000016)
Pitcairn PRO(215-0828062)
Architecture
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
11.06 billion
2.8 billion
Die Size
237 mm²
212 mm²
Board Design
TDP
132W
150W
Suggested PSU
300 W
450 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
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.3
1.2
Shader Model
6.5
5.1