AMD Phenom X4 9850B vs Intel Core 2 Quad Q8400

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Combined performance score

Core 2 Quad Q8400
1.35
+6.3%

Core 2 Quad Q8400 outperforms Phenom X4 9850B by 6% in our combined benchmark results.

General info

Comparing Core 2 Quad Q8400 and Phenom X4 9850B processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking21112157
Place by popularitynot in top-100not in top-100
Value for money2.73no data
Market segmentDesktop processorDesktop processor
Architecture codenameYorkfield (2007−2009)Agena (2007−2008)
Release dateApril 2009 (14 years old)August 2008 (15 years old)
Current price$58 no data
Value for money

Performance per price, higher is better.

no data

Technical specs

Core 2 Quad Q8400 and Phenom X4 9850B 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 cores4 (Quad-Core)4 (Quad-Core)
Threads44
Base clock speed2.66 GHzno data
Boost clock speed2.67 GHz2.5 GHz
L1 cache64K (per core)128 KB (per core)
L2 cache4 MB (shared)512 KB (per core)
L3 cache0 KB2 MB (shared)
Chip lithography45 nm65 nm
Die size2x 81 mm2285 mm2
Maximum core temperature71 °Cno data
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million450 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Phenom X4 9850B 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 configuration11
SocketFCLGA775,LGA775AM2+
Power consumption (TDP)95 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Phenom X4 9850B. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Quad Q8400 and Phenom X4 9850B 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 Phenom X4 9850B are enumerated here.

AMD-Vno data+
VT-x+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Phenom X4 9850B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3no data

Synthetic benchmark performance

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


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.

Core 2 Quad Q8400 1.35
+6.3%
Phenom X4 9850B 1.27

Core 2 Quad Q8400 outperforms Phenom X4 9850B by 6% in our combined benchmark results.


Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

Core 2 Quad Q8400 2073
+6.5%
Phenom X4 9850B 1946

Core 2 Quad Q8400 outperforms Phenom X4 9850B by 7% in Passmark.

Gaming performance

Advantages and disadvantages


Performance score 1.35 1.27
Chip lithography 45 nm 65 nm

We couldn't decide between Core 2 Quad Q8400 and Phenom X4 9850B. The differences in performance seem too small.


Should you still have questions on choice between Core 2 Quad Q8400 and Phenom X4 9850B, ask them in Comments section, and we shall answer.

User ratings

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


Intel Core 2 Quad Q8400
Core 2 Quad Q8400
AMD Phenom X4 9850B
Phenom X4 9850B

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User ratings: view and submit

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4 1190 votes

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Questions and comments

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