AMD Radeon HD 6870 vs AMD Radeon RX 6400
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Jan 2022
Generation
Northern Islands
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x4
Clock Speeds
Memory Clock
1050 MHz
2000 MHz
Base Clock
—
1923 MHz
Boost Clock
—
2321 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
64bit
Bandwidth
134.4GB/s
128.0GB/s
Render Config
Compute Units
14
12
Shading Units
1120
768
TMUs
56
48
ROPs
32
32
L1 Cache
8 KB (per CU)
128 KB per Array
L2 Cache
512 KB
1024 KB
RT Cores
—
12
L3 Cache
—
16 MB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
74.27 GPixel/s
Texture Rate
50.40 GTexel/s
111.4 GTexel/s
FP32 (float)
2.016 TFLOPS
3.565 TFLOPS
FP16 (half)
—
7.130 TFLOPS
FP64 (double)
—
222.8 GFLOPS
Graphics Processor
GPU Name
Barts
Navi 24
GPU Variant
Barts XT(215-0798000)
Navi 24 XL(215-135000046)
Architecture
TeraScale 2
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
40 nm
6 nm
Transistors
1.7 billion
5.4 billion
Die Size
255 mm²
107 mm²
Board Design
TDP
151W
53W
Suggested PSU
450 W
250 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
1x HDMI 2.11x DisplayPort 1.4a
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
11.2 (11_0)
12 Ultimate (12_2)
OpenGL
4.4
4.6
OpenCL
1.2
2.2
Vulkan
N/A
1.3
Shader Model
5.0
6.7
▲ Specs Compare
Data sourced from official specifications and benchmark tests.