Core Ultra 5 236V vs Core 2 Quad Q8400

Place in the ranking	2281	557
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Power efficiency	1.30	75.14
Architecture codename	Yorkfield (2007−2009)	Lunar Lake (2024)
Release date	19 April 2009 (15 years ago)	24 September 2024 (less than a year ago)

Detailed specifications

Core 2 Quad Q8400 and Core Ultra 5 236V basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	8 (Octa-Core)
Threads	4	8
Base clock speed	2.66 GHz	2.1 GHz
Boost clock speed	0.67 GHz	4.7 GHz
Bus rate	1333 MHz	37 MHz
L1 cache	64 KB (per core)	192 KB (per core)
L2 cache	4 MB (shared)	2.5 MB (per core)
L3 cache	0 KB	8 MB (shared)
Chip lithography	45 nm	3 nm
Die size	2x 82 mm²	no data
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q8400 and Core Ultra 5 236V compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FCLGA775,LGA775	Intel BGA 2833
Power consumption (TDP)	95 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Core Ultra 5 236V. You'll probably need this information if you require some particular technology.

AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Quad Q8400 and Core Ultra 5 236V technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Core Ultra 5 236V are enumerated here.

VT-d	no data	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Core Ultra 5 236V. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

Arc 130V

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Core Ultra 5 236V.

PCIe version	2.0	5.0
PCI Express lanes	no data	4

Gaming performance

Pros & cons summary

Performance score	1.30	13.49
Recency	19 April 2009	24 September 2024
Physical cores	4	8
Threads	4	8
Chip lithography	45 nm	3 nm
Power consumption (TDP)	95 Watt	17 Watt

Ultra 5 236V has a 937.7% higher aggregate performance score, an age advantage of 15 years, 100% more physical cores and 100% more threads, a 1400% more advanced lithography process, and 458.8% lower power consumption.

The Core Ultra 5 236V is our recommended choice as it beats the Core 2 Quad Q8400 in performance tests.

Note that Core 2 Quad Q8400 is a desktop processor while Core Ultra 5 236V is a notebook one.

Should you still have questions on choice between Core 2 Quad Q8400 and Core Ultra 5 236V, ask them in Comments section, and we shall answer.