Radeon HD 4870 and Radeon RX 6600 XT - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon RX 6600 XT
Radeon HD 4870
1411
Radeon RX 6600 XT
16985
Radeon HD 4870
Radeon RX 6600 XT
Architecture
TeraScale (2005−2013)
Navi / RDNA2 (2020−2022)
GPU code name
RV770
Navi 23
Market segment
Desktop
Desktop
Release date
June 2008
July 2021
Interface
PCIe 2.0 x16
PCIe 4.0 x8
Supplementary power connectors
2x 6-pin
1x 8-pin
Boost clock speed
-
2589 MHz
Core clock speed
750 MHz
1968 MHz
Floating-point performance
1,200.0 gflops
-
Manufacturing process technology
55 nm
7 nm
Number of transistors
956 million
11,060 million
Pipelines / CUDA cores
800
2048
Power consumption (TDP)
150 Watt
160 (TGP) Watt
Texture fill rate
30.00
331.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
1 GB
8 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
16000 MHz
Memory bandwidth
115.2 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
1.1
2.1
OpenGL
3.3
4.6
Shader Model
4.1
6.5
Vulkan
N/A
1.2