Radeon RX 6700 XT vs Radeon HD 6450 OEM
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 XT and 512MB VRAM Radeon HD 6450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6700 XT Advantages
Released 10 years and 1 months late
Boost Clock2581MHz
More VRAM (12GB vs 512GB)
Larger VRAM bandwidth (384.0GB/s vs 8.528GB/s)
2400 additional rendering cores
Radeon HD 6450 OEM Advantages
Lower TDP (18W vs 230W)
Score
Benchmark
FP32 (float)
Radeon RX 6700 XT
+6505%
13210
Radeon HD 6450 OEM
200
Graphics Card
Mar 2021
Release Date
Feb 2011
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2321 MHz
Base Clock
-
2581 MHz
Boost Clock
-
2000 MHz
Memory Clock
533 MHz
Memory
12GB
Memory Size
512MB
GDDR6
Memory Type
GDDR3
192bit
Memory Bus
64bit
384.0GB/s
Bandwidth
8.528GB/s
Render Config
40
Compute Units
2
2560
Shading Units
160
160
TMUs
8
64
ROPs
4
40
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
3 MB
L2 Cache
128 KB
96 MB
L3 Cache
-
Theoretical Performance
165.2 GPixel/s
Pixel Rate
2.500 GPixel/s
413.0 GTexel/s
Texture Rate
5.000 GTexel/s
26.43 TFLOPS
FP16 (half)
-
13.21 TFLOPS
FP32 (float)
200.0 GFLOPS
825.9 GFLOPS
FP64 (double)
-
Board Design
230W
TDP
18W
550 W
Suggested PSU
200 W
1x HDMI 2.1
3x DisplayPort 1.4a
3x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
1x HDMI 1.3a
1x VGA
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Processor
Navi 22
GPU Name
Caicos
Navi 22 XT
(215-127000006)
(215-127000006)
GPU Variant
Junbonator
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
17.2 billion
Transistors
0.37 billion
335 mm²
Die Size
67 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
6.5
Shader Model
5.0
