AMD Radeon RX 6600 vs AMD Radeon HD 6850
GPU Specs Compare
Graphics Card
Release Date
Oct 2021
Oct 2010
Generation
Navi II
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 2.0 x16
Clock Speeds
Base Clock
1626 MHz
-
Boost Clock
2491 MHz
-
Memory Clock
1750 MHz
1000 MHz
Memory
Memory Size
8GB
1024MB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
256bit
Bandwidth
224.0GB/s
128.0GB/s
Render Config
Compute Units
28
12
Shading Units
1792
960
TMUs
112
48
ROPs
64
32
RT Cores
28
-
L1 Cache
128 KB per Array
8 KB (per CU)
L2 Cache
2 MB
512 KB
L3 Cache
32 MB
-
Theoretical Performance
Pixel Rate
159.4 GPixel/s
24.80 GPixel/s
Texture Rate
279.0 GTexel/s
37.20 GTexel/s
FP16 (half)
17.86 TFLOPS
-
FP32 (float)
8.928 TFLOPS
1488 GFLOPS
FP64 (double)
558.0 GFLOPS
-
Graphics Processor
GPU Name
Navi 23
Barts
GPU Variant
Navi 23 XL(215-130000016)
Barts PRO(215-0798006)
Architecture
RDNA 2.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
7 nm
40 nm
Transistors
11.06 billion
1.7 billion
Die Size
237 mm²
255 mm²
Board Design
TDP
132W
127W
Suggested PSU
300 W
300 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Power Connectors
1x 8-pin
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.1
1.2
Vulkan
1.3
N/A
Shader Model
6.5
5.0