AMD Radeon RX 6600 XT vs AMD Radeon HD 7950 Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Jul 2021
Mar 2013
Generation
Navi II
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1968 MHz
—
Boost Clock
2589 MHz
—
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
8GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
384bit
Bandwidth
256.0GB/s
240.0GB/s
Render Config
Compute Units
32
28
Shading Units
2048
1792
TMUs
128
112
ROPs
64
32
RT Cores
32
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
768 KB
L3 Cache
32 MB
—
Theoretical Performance
Pixel Rate
165.7 GPixel/s
25.60 GPixel/s
Texture Rate
331.4 GTexel/s
89.60 GTexel/s
FP16 (half)
21.21 TFLOPS
—
FP32 (float)
10.60 TFLOPS
2.867 TFLOPS
FP64 (double)
662.8 GFLOPS
716.8 GFLOPS
Graphics Processor
GPU Name
Navi 23
Tahiti
GPU Variant
Navi 23 XT(215-130000006)
Tahiti PRO(215-0821056)
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
160W
200W
Suggested PSU
450 W
550 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 8-pin
2x 6-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
6.7
5.1
Benchmark
3DMark Time Spy
9,656
—
3DMark Time Spy Extreme
4,399
—
3DMark Speed Way
1,675
—
Battlefield 5 1080p
144
—
Shadow of the Tomb Raider 2160p
38
—
Cyberpunk 2077 2160p
29
—
Shadow of the Tomb Raider 1440p
72
—
Cyberpunk 2077 1440p
36
—
Shadow of the Tomb Raider 1080p
119
—
Battlefield 5 2160p
58
—
Blender
1,213
—
Cyberpunk 2077 1080p
58
—
Battlefield 5 1440p
111
—
GTA 5 2160p
61
—
GTA 5 1440p
82
—
GTA 5 1080p
149
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.