AMD Radeon HD 7870 XT vs AMD Radeon RX 6600
GPU Specs Compare
Graphics Card
Release Date
Nov 2012
Oct 2021
Generation
Southern Islands
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
925 MHz
1626 MHz
Boost Clock
975 MHz
2491 MHz
Memory Clock
1500 MHz
1750 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
128bit
Bandwidth
192.0GB/s
224.0GB/s
Render Config
Compute Units
24
28
Shading Units
1536
1792
TMUs
96
112
ROPs
32
64
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
512 KB
2 MB
RT Cores
-
28
L3 Cache
-
32 MB
Theoretical Performance
Pixel Rate
31.20 GPixel/s
159.4 GPixel/s
Texture Rate
93.60 GTexel/s
279.0 GTexel/s
FP32 (float)
2.995 TFLOPS
8.928 TFLOPS
FP64 (double)
748.8 GFLOPS
558.0 GFLOPS
FP16 (half)
-
17.86 TFLOPS
Graphics Processor
GPU Name
Tahiti
Navi 23
GPU Variant
Tahiti LE(215-0821122)
Navi 23 XL(215-130000016)
Architecture
GCN 1.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
4.313 billion
11.06 billion
Die Size
352 mm²
237 mm²
Board Design
TDP
185W
132W
Suggested PSU
450 W
300 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
2x 6-pin
1x 8-pin
Graphics Features
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.2
1.3
Shader Model
5.1
6.5