Radeon RX 6600 XT vs Radeon R9 380 OEM
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 4GB VRAM Radeon R9 380 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6600 XT 's Advantages
Released 6 years and 2 months late
Boost Clock2589MHz
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (256.0GB/s vs 176.0GB/s)
256 additional rendering cores
Lower TDP (160W vs 190W)
Score
Benchmark
FP32 (float)
Radeon RX 6600 XT
+222%
10600
Radeon R9 380 OEM
3290
Graphics Card
Jul 2021
Release Date
May 2015
Navi II
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
1968 MHz
Base Clock
-
2589 MHz
Boost Clock
-
2000 MHz
Memory Clock
1375 MHz
Memory
8GB
Memory Size
4GB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
256bit
256.0GB/s
Bandwidth
176.0GB/s
Render Config
32
Compute Units
28
2048
Shading Units
1792
128
TMUs
112
64
ROPs
32
32
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
512 KB
32 MB
L3 Cache
-
Theoretical Performance
165.7 GPixel/s
Pixel Rate
29.38 GPixel/s
331.4 GTexel/s
Texture Rate
102.8 GTexel/s
21.21 TFLOPS
FP16 (half)
3.290 TFLOPS
10.60 TFLOPS
FP32 (float)
3.290 TFLOPS
662.8 GFLOPS
FP64 (double)
205.6 GFLOPS
Board Design
160W
TDP
190W
450 W
Suggested PSU
450 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x 8-pin
Power Connectors
2x 6-pin
Graphics Processor
Navi 23
GPU Name
Antigua
Navi 23 XT
(215-130000006)
GPU Variant
Antigua PRO
(215-0877000)
RDNA 2.0
Architecture
GCN 3.0
TSMC
Foundry
TSMC
7 nm
Process Size
28 nm
11.06 billion
Transistors
5 billion
237 mm²
Die Size
366 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.0
1.3
Vulkan
1.2
6.7
Shader Model
6.3
