Intel Core i5-655K vs Intel Core Ultra 9 285K

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

Core i5-655K compared with Core Ultra 9 285K

	IntelCore i5-655K	IntelCore Ultra 9 285K
Overview
Released
Released	June 2010	October 2024
Cores and clocks
Cores
Cores	2	24 (8 performance, 16 efficiency) (better)
Threads
Threads	4	24 (better)
Base clock
Base clock	3.2 GHz	3.7 GHz
Boost clock
Boost clock	3.46 GHz	5.7 GHz (better)
L3 cache
L3 cache	4 MB	36 MB (better)
Cores
Cores	Two cores and four threads with Hyper-Threading; unlocked multiplier confirmed in the exact reviews.	8 Performance-cores and 16 Efficient-cores, no Hyper-Threading; codename Arrow Lake
Clocks
Clocks	3.20 GHz base and up to 3.46 GHz Turbo Boost. Intel gives Q2 2010; contemporary AKIBA PC Hotline reporting confirms retail availability in June. May launch coverage and an earlier listing do not establish an exact first-sale day, so month precision is retained.	P-core base 3.7 GHz, max turbo 5.5 GHz; E-core base 3.2 GHz, max turbo 4.6 GHz; Turbo Boost Max 3.0 5.6 GHz; Thermal Velocity Boost 5.7 GHz
Cache
Cache	4 MB shared L3 cache.	36 MB Intel Smart Cache (L3); 40 MB L2
Graphics and AI
Built-in graphics
Built-in graphics	Yes	Yes
Graphics
Graphics	Intel HD Graphics at 733 MHz in Intel’s exact-model comparison chart.	Intel Graphics, 4 Xe-cores, up to 2 GHz; outputs eDP1.4b, DP 2.1 UHBR20, HDMI 2.1 FRL; up to 4 displays; H.264, HEVC and AV1 encode and decode
AI engine
AI engine	–	Intel AI Boost NPU, 13 TOPS (INT8); 36 TOPS for the whole processor
Platform
Socket
Socket	LGA1156	LGA1851
Base power
Base power	73 W	125 W
Maximum power
Maximum power	–	250 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	Two channels of DDR3-1066/1333 in Intel’s exact-model chart.	Up to DDR5 6400 MT/s; 2 channels, up to 256 GB; ECC supported
PCIe
PCIe	–	PCIe 5.0 and 4.0; 24 lanes (Up to 1x16+2x4, 2x8+2x4, 1x8+4x4); DMI 4 x8; Thunderbolt 4 built in
Process
Process	32 nm CPU and separate 45 nm graphics die, as described by bit-tech’s exact review.	TSMC N3B (CPU)
Cooler
Cooler	The exact Newegg listing and contemporary AKIBA PC Hotline retail report confirm that the boxed model has no cooler.	max operating temperature 105 °C; thermal specification PCG 2020A