Radeon HD 3850 X2 and Radeon RX 6600 XT - video card comparison
Passmark - benchmark score Radeon HD 3850 X2 vs Radeon RX 6600 XT
Radeon HD 3850 X2
847
Radeon RX 6600 XT
16985
Radeon HD 3850 X2
Radeon RX 6600 XT
Architecture
TeraScale (2005−2013)
Navi / RDNA2 (2020−2022)
GPU code name
RV670
Navi 23
Market segment
Desktop
Desktop
Release date
April 2008
July 2021
Interface
PCIe 2.0 x16
PCIe 4.0 x8
Supplementary power connectors
-
1x 8-pin
Boost clock speed
-
2589 MHz
Core clock speed
669 MHz
1968 MHz
Floating-point performance
2x 428.2 gflops
-
Manufacturing process technology
55 nm
7 nm
Number of transistors
666 million
11,060 million
Pipelines / CUDA cores
320
2048
Power consumption (TDP)
140 Watt
160 (TGP) Watt
Texture fill rate
10.70
331.4
Memory type
GDDR3
GDDR6
Maximum RAM amount
512 MB
8 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1656 MHz
16000 MHz
Memory bandwidth
52.99 GB/s
256.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
1x HDMI, 2x DisplayPort
HDMI
-
+
DirectX
10.1 (10_1)
12.0 Ultimate (12_2)
OpenCL
N/A
2.1
OpenGL
3.3
4.6
Shader Model
4.1
6.5
Vulkan
N/A
1.2