Home GPU Comparison AMD Radeon RX 6600 vs ATI Radeon HD 3850 X3

AMD Radeon RX 6600 vs ATI Radeon HD 3850 X3

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 512MB VRAM Radeon HD 3850 X3 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 's Advantages
Boost Clock2491MHz
More VRAM (8GB vs 512GB)
Larger VRAM bandwidth (224.0GB/s vs 54.40GB/s)
1472 additional rendering cores
Lower TDP (132W vs 145W)

Score

Benchmark

FP32 (float)
Radeon RX 6600 +1985%
8.928 TFLOPS
Radeon HD 3850 X3
0.428 TFLOPS
VS

Graphics Card

Oct 2021
Release Date
Unknown
Navi II
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 2.0 x16

Clock Speeds

1626 MHz
Base Clock
-
2491 MHz
Boost Clock
-
1750 MHz
Memory Clock
850 MHz

Memory

8GB
Memory Size
512MB
GDDR6
Memory Type
GDDR3
128bit
Memory Bus
256bit
224.0GB/s
Bandwidth
54.40GB/s

Render Config

28
Compute Units
4
-
-
-
1792
Shading Units
320
112
TMUs
16
64
ROPs
16
-
-
-
28
RT Cores
-
128 KB per Array
L1 Cache
-
2 MB
L2 Cache
256 KB
32 MB
L3 Cache
-

Theoretical Performance

159.4 GPixel/s
Pixel Rate
10.70 GPixel/s
279.0 GTexel/s
Texture Rate
10.70 GTexel/s
17.86 TFLOPS
FP16 (half)
-
8.928 TFLOPS
FP32 (float)
428.2 GFLOPS
558.0 GFLOPS
FP64 (double)
-

Board Design

132W
TDP
145W
300 W
Suggested PSU
300 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
4x DVI
1x 8-pin
Power Connectors
1x 8-pin

Graphics Processor

Navi 23
GPU Name
RV670
Navi 23 XL (215-130000016)
GPU Variant
RV670 PRO (215-0708003)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
11.06 billion
Transistors
0.666 billion
237 mm²
Die Size
192 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
2.1
OpenCL
N/A
1.3
Vulkan
N/A
-
-
-
6.5
Shader Model
4.1

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