Intel Core Ultra 7 255H vs Intel Celeron 6305
We compared two laptop CPUs: Intel Core Ultra 7 255H with 16 cores 2.0GHz and Intel Celeron 6305 with 2 cores 1.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core Ultra 7 255H 's Advantages
Released 4 years and 4 months late
Higher specification of memory (8400 vs 3733)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (2.0GHz vs 1.8GHz)
Larger L3 cache size (24MB vs 4MB)
More modern manufacturing process (3nm vs 10nm)
Intel Celeron 6305 's Advantages
Lower TDP (15W vs 28W)
Score
Benchmark
Geekbench 6 Single Core
Intel Core Ultra 7 255H
+341%
2823
Intel Celeron 6305
640
Geekbench 6 Multi Core
Intel Core Ultra 7 255H
+1338%
15662
Intel Celeron 6305
1089
General Parameters
Jan 2025
Release Date
Sep 2020
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Arrow Lake
Core Architecture
Tiger Lake
255H
Processor Number
6305
FCBGA-2049
Socket
BGA-1449
Arc Graphics 140T
Integrated Graphics
UHD Graphics Xe G4 48 EUs
Package
3 nm
Manufacturing Process
10 nm
20-28 W
Power Consumption
15 W
115 W
Max Turbo Power Consumption
-
110 °C
Peak Operating Temperature
100 °C
CPU Performance
6
Performance Cores
2
6
Performance Core Threads
2
2.0 GHz
Performance Core Base Frequency
1.8 GHz
5.1 GHz
Performance Core Turbo Frequency
-
10
Efficiency Cores
-
10
Efficiency Core Threads
-
1.5 GHz
Efficiency Core Base Frequency
-
4.4 GHz
Efficiency Core Turbo Frequency
-
16
Total Core Count
2
16
Total Thread Count
2
100 MHz
Bus Frequency
100 MHz
20
Multiplier
18x
112 K per core
L1 Cache
96 K per core
2 MB per core
L2 Cache
1256 K per core
24 MB shared
L3 Cache
4 MB shared
No
Unlocked Multiplier
No
Memory Parameters
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
Memory Types
DDR4-3200, LPDDR4x-3733
128 GB
Max Memory Size
64 GB
2
Max Memory Channels
2
-
Max Memory Bandwidth
51.2 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
true
-
GPU Base Frequency
300 MHz
2250 MHz
GPU Max Dynamic Frequency
1250 MHz
-
Shader Units
384
-
Texture Units
24
-
Raster Operation Units
12
-
Execution Units
48
-
Power Consumption
15 W
-
Graphics Performance
0.84 TFLOPS
