Radeon RX 6400 vs GeForce GTX 660 Ti
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6400 's Advantages
Released 9 years and 5 months late
Boost Clock has increased by 137% (2321MHz vs 980MHz)
More VRAM (4GB vs 2GB)
Lower TDP (53W vs 150W)
GeForce GTX 660 Ti 's Advantages
Larger VRAM bandwidth (144.2GB/s vs 128.0GB/s)
576 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6400
+35%
3565
GeForce GTX 660 Ti
2634
3DMark Time Spy
Radeon RX 6400
+121%
3585
GeForce GTX 660 Ti
1616
Blender
Radeon RX 6400
+97%
334
GeForce GTX 660 Ti
169
Graphics Card
Jan 2022
Release Date
Aug 2012
Navi II
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 3.0 x16
Clock Speeds
1923 MHz
Base Clock
915 MHz
2321 MHz
Boost Clock
980 MHz
2000 MHz
Memory Clock
1502 MHz
Memory
4GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
64bit
Memory Bus
192bit
128.0GB/s
Bandwidth
144.2GB/s
Render Config
12
Compute Units
-
768
Shading Units
1344
48
TMUs
112
32
ROPs
24
12
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per SMX)
1024 KB
L2 Cache
384 KB
16 MB
L3 Cache
-
Theoretical Performance
74.27 GPixel/s
Pixel Rate
27.44 GPixel/s
111.4 GTexel/s
Texture Rate
109.8 GTexel/s
7.130 TFLOPS
FP16 (half)
-
3.565 TFLOPS
FP32 (float)
2.634 TFLOPS
222.8 GFLOPS
FP64 (double)
109.8 GFLOPS
Board Design
53W
TDP
150W
250 W
Suggested PSU
450 W
1x HDMI 2.1
1x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
None
Power Connectors
2x 6-pin
Graphics Processor
Navi 24
GPU Name
GK104
Navi 24 XL
(215-135000046)
GPU Variant
GK104-300-KD-A2
RDNA 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
6 nm
Process Size
28 nm
5.4 billion
Transistors
3.54 billion
107 mm²
Die Size
294 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.2
OpenCL
3.0
1.3
Vulkan
1.1
-
CUDA
3.0
6.7
Shader Model
5.1