Ryzen 9 7945HX vs Core 2 Quad Q9400s

Primary details

Comparing Core 2 Quad Q9400s and Ryzen 9 7945HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	110
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Power efficiency	no data	59.21
Architecture codename	Yorkfield (2007−2009)	Dragon Range-HX (Zen 4) (2023−2024)
Release date	18 January 2009 (15 years ago)	4 January 2023 (1 year ago)

Detailed specifications

Core 2 Quad Q9400s and Ryzen 9 7945HX 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)	16 (Hexadeca-Core)
Threads	4	32
Base clock speed	2.66 GHz	2.5 GHz
Boost clock speed	0.67 GHz	5.4 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	6 MB (shared)	1 MB (per core)
L3 cache	0 KB	64 MB (shared)
Chip lithography	45 nm	CCD = 5 nm, I/O = 6 nm
Die size	2x 82 mm2	2x 71 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	76 °C	no data
Number of transistors	456 million	13,140 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9400s and Ryzen 9 7945HX 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	LGA775	FL1
Power consumption (TDP)	65 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400s and Ryzen 9 7945HX. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	-	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
FSB parity	-	no data
Precision Boost 2	no data	+

Security technologies

Core 2 Quad Q9400s and Ryzen 9 7945HX technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400s and Ryzen 9 7945HX are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400s and Ryzen 9 7945HX. 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)

AMD Radeon 610M

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400s and Ryzen 9 7945HX.

PCIe version	2.0	5.0
PCI Express lanes	no data	28

Pros & cons summary

---

Recency	18 January 2009	4 January 2023
Physical cores	4	16
Threads	4	32
Power consumption (TDP)	65 Watt	55 Watt

---

Should you still have questions on choice between Core 2 Quad Q9400s and Ryzen 9 7945HX, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---