AMD Radeon HD 7770 GHz Edition vs AMD Radeon RX 6400
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 4GB VRAM Radeon RX 6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6400 's Advantages
Released 9 years and 11 months late
Boost Clock2321MHz
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (128.0GB/s vs 72.00GB/s)
128 additional rendering cores
Lower TDP (53W vs 80W)
Score
Benchmark
FP32 (float)
Radeon HD 7770 GHz Edition
1.28 TFLOPS
Radeon RX 6400
+178%
3.565 TFLOPS
Graphics Card
Feb 2012
Release Date
Jan 2022
Southern Islands
Generation
Navi II
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x4
Clock Speeds
-
Base Clock
1923 MHz
-
Boost Clock
2321 MHz
1125 MHz
Memory Clock
2000 MHz
Memory
1024MB
Memory Size
4GB
GDDR5
Memory Type
GDDR6
128bit
Memory Bus
64bit
72.00GB/s
Bandwidth
128.0GB/s
Render Config
10
Compute Units
12
-
-
-
640
Shading Units
768
40
TMUs
48
16
ROPs
32
-
-
-
-
RT Cores
12
16 KB (per CU)
L1 Cache
128 KB per Array
256 KB
L2 Cache
1024 KB
-
L3 Cache
16 MB
Theoretical Performance
16.00 GPixel/s
Pixel Rate
74.27 GPixel/s
40.00 GTexel/s
Texture Rate
111.4 GTexel/s
-
FP16 (half)
7.130 TFLOPS
1280 GFLOPS
FP32 (float)
3.565 TFLOPS
80.00 GFLOPS
FP64 (double)
222.8 GFLOPS
Board Design
80W
TDP
53W
250 W
Suggested PSU
250 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
1x HDMI 2.1
1x DisplayPort 1.4a
1x 6-pin
Power Connectors
None
Graphics Processor
Cape Verde
GPU Name
Navi 24
Cape Verde XT
GPU Variant
Navi 24 XL
(215-135000046)
GCN 1.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
6 nm
1.5 billion
Transistors
5.4 billion
123 mm²
Die Size
107 mm²
Graphics Features
12 (11_1)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
1.2
OpenCL
2.2
1.2
Vulkan
1.3
-
-
-
5.1
Shader Model
6.7
