Radeon R9 280X and Radeon RX 6600 XT - video card comparison
Passmark - benchmark score Radeon R9 280X vs Radeon RX 6600 XT
Radeon R9 280X
6012
Radeon RX 6600 XT
16985
Radeon R9 280X
Radeon RX 6600 XT
Architecture
GCN (2011−2017)
Navi / RDNA2 (2020−2022)
GPU code name
Thaiti XTL
Navi 23
Market segment
Desktop
Desktop
Release date
October 2013
July 2021
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x8
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
1x 8-pin
Boost clock speed
1000 MHz
2589 MHz
Core clock speed
-
1968 MHz
Floating-point performance
4,096 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
4,313 million
11,060 million
Pipelines / CUDA cores
2048
2048
Power consumption (TDP)
250 Watt
160 (TGP) Watt
Texture fill rate
128.0
331.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
3 GB
8 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
-
16000 MHz
Memory bandwidth
288 GB/s
256.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x HDMI, 2x DisplayPort
Eyefinity
+
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
12.0 Ultimate (12_2)
Mantle
-
-
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
+
1.2
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-