Sempron 2650 vs Core 2 Quad Q8400

Primary details

Comparing Core 2 Quad Q8400 and Sempron 2650 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2281	3068
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	1.30	1.33
Architecture codename	Yorkfield (2007−2009)	Kabini (2013−2014)
Release date	19 April 2009 (15 years ago)	9 April 2014 (10 years ago)

Detailed specifications

Core 2 Quad Q8400 and Sempron 2650 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)	2 (Dual-core)
Threads	4	2
Base clock speed	2.66 GHz	no data
Boost clock speed	0.67 GHz	1.45 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	128 KB
L2 cache	4 MB (shared)	1024 KB
L3 cache	0 KB	no data
Chip lithography	45 nm	28 nm
Die size	2x 82 mm2	107 mm2
Maximum core temperature	no data	90 °C
Maximum case temperature (TCase)	71 °C	90 °C
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 Sempron 2650 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	AM1
Power consumption (TDP)	95 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Sempron 2650. You'll probably need this information if you require some particular technology.

AES-NI	-	+
FMA	-	FMA4
AVX	-	+
PowerNow	-	+
PowerGating	-	+
VirusProtect	-	+
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

Security technologies

Core 2 Quad Q8400 and Sempron 2650 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 Q8400 and Sempron 2650 are enumerated here.

AMD-V	-	+
VT-x	+	no data
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Sempron 2650. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR3-1333
Max memory channels	no data	1

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	On certain motherboards (Chipset feature)	AMD Radeon R3 Graphics
จำนวนพาธไลน์	no data	128
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Core 2 Quad Q8400 and Sempron 2650 integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Core 2 Quad Q8400 and Sempron 2650 integrated GPUs, sometimes API versions are included.

DirectX	no data	DirectX® 12
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Sempron 2650.

PCIe version	2.0	2.0
PCI Express lanes	no data	4

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	1.30	0.35
Recency	19 April 2009	9 April 2014
Physical cores	4	2
Threads	4	2
Chip lithography	45 nm	28 nm
Power consumption (TDP)	95 Watt	25 Watt

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Should you still have questions on choice between Core 2 Quad Q8400 and Sempron 2650, ask them in Comments section, and we shall answer.

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