Radeon RX 6600 XT vs Radeon HD 6770
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 1024MB VRAM Radeon HD 6770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6600 XT 's Advantages
Released 10 years and 6 months late
Boost Clock2589MHz
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (256.0GB/s vs 76.80GB/s)
1248 additional rendering cores
Radeon HD 6770 's Advantages
Lower TDP (108W vs 160W)
Score
Benchmark
FP32 (float)
Radeon RX 6600 XT
+679%
10600
Radeon HD 6770
1360
3DMark Time Spy
Radeon RX 6600 XT
+146%
9656
Radeon HD 6770
3924
Graphics Card
Jul 2021
Release Date
Jan 2011
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1968 MHz
Base Clock
-
2589 MHz
Boost Clock
-
2000 MHz
Memory Clock
1200 MHz
Memory
8GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
128bit
256.0GB/s
Bandwidth
76.80GB/s
Render Config
32
Compute Units
10
2048
Shading Units
800
128
TMUs
40
64
ROPs
16
32
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
2 MB
L2 Cache
256 KB
32 MB
L3 Cache
-
Theoretical Performance
165.7 GPixel/s
Pixel Rate
13.60 GPixel/s
331.4 GTexel/s
Texture Rate
34.00 GTexel/s
21.21 TFLOPS
FP16 (half)
-
10.60 TFLOPS
FP32 (float)
1360 GFLOPS
662.8 GFLOPS
FP64 (double)
-
Board Design
160W
TDP
108W
450 W
Suggested PSU
300 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
Navi 23
GPU Name
Juniper
Navi 23 XT
(215-130000006)
GPU Variant
Juniper XT
(215-0754013)
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
11.06 billion
Transistors
1.04 billion
237 mm²
Die Size
166 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
6.7
Shader Model
5.0
