AMD Radeon RX 6600 vs AMD Radeon HD 8970 OEM
GPU Specs Compare
Graphics Card
Release Date
Oct 2021
Jan 2013
Generation
Navi II
Sea Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1626 MHz
-
Boost Clock
2491 MHz
-
Memory Clock
1750 MHz
1375 MHz
Memory
Memory Size
8GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
384bit
Bandwidth
224.0GB/s
264.0GB/s
Render Config
Compute Units
28
32
Shading Units
1792
2048
TMUs
112
128
ROPs
64
32
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
768 KB
L3 Cache
32 MB
-
Theoretical Performance
Pixel Rate
159.4 GPixel/s
29.60 GPixel/s
Texture Rate
279.0 GTexel/s
118.4 GTexel/s
FP16 (half)
17.86 TFLOPS
-
FP32 (float)
8.928 TFLOPS
3.789 TFLOPS
FP64 (double)
558.0 GFLOPS
947.2 GFLOPS
Graphics Processor
GPU Name
Navi 23
Tahiti
GPU Variant
Navi 23 XL(215-130000016)
Tahiti XT(215-0821060)
Architecture
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
11.06 billion
4.313 billion
Die Size
237 mm²
352 mm²
Board Design
TDP
132W
250W
Suggested PSU
300 W
600 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 8-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.3
1.2
Shader Model
6.5
5.1