Radeon HD 6870 vs Radeon RX 6650 XT
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 8GB VRAM Radeon RX 6650 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 6870 's Advantages
Lower TDP (151W vs 176W)
Radeon RX 6650 XT 's Advantages
Released 11 years and 7 months late
Boost Clock2635MHz
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (280.3GB/s vs 134.4GB/s)
928 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6870
2016
Radeon RX 6650 XT
+435%
10790
Graphics Card
Oct 2010
Release Date
May 2022
Northern Islands
Generation
Navi II
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x8
Clock Speeds
-
Base Clock
2055 MHz
-
Boost Clock
2635 MHz
1050 MHz
Memory Clock
2190 MHz
Memory
1024MB
Memory Size
8GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
128bit
134.4GB/s
Bandwidth
280.3GB/s
Render Config
14
Compute Units
32
1120
Shading Units
2048
56
TMUs
128
32
ROPs
64
-
RT Cores
32
8 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
2 MB
-
L3 Cache
32 MB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
168.6 GPixel/s
50.40 GTexel/s
Texture Rate
337.3 GTexel/s
-
FP16 (half)
21.59 TFLOPS
2.016 TFLOPS
FP32 (float)
10.79 TFLOPS
-
FP64 (double)
674.6 GFLOPS
Board Design
151W
TDP
176W
450 W
Suggested PSU
450 W
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
Outputs
1x HDMI 2.1
3x DisplayPort 1.4a
2x 6-pin
Power Connectors
1x 8-pin
Graphics Processor
Barts
GPU Name
Navi 23
Barts XT
(215-0798000)
GPU Variant
Navi 23 KXT
(215-130000136)
TeraScale 2
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
7 nm
1.7 billion
Transistors
11.06 billion
255 mm²
Die Size
237 mm²
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.3
5.0
Shader Model
6.5
