Intel Core2 Quad Q9300 

Released January, 2008
  • 2.5 GHz
  • Quad core
3.4 Out of 10

But thanks to the pumped up 1,333MHz bus, we can't help wondering whether we really got the most out of the Q9300.
by Tech Radar (Feb, 2008)
The Q9300 offers robust overclockability and good performance in a wide range of products.
by PCMag (Apr, 2008)

CPUBoss Review Our evaluation of the Intel Core2 Quad Q9300 among desktop CPUs (over 75W)


Benchmark performance using all cores

Core2 Quad Q9300
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core2 Quad Q9300
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core2 Quad Q9300
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core2 Quad Q9300
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core2 Quad Q9300
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Core2 Quad Q9300
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Core2 Quad Q9300

Benchmarks Real world tests of the Intel Core2 Quad Q9300

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core2 Quad Q9300

GeekBench 3 (Single core) Data courtesy Primate Labs

Core2 Quad Q9300

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Quad Q9300
107,000 MB/s
Core2 Quad Q8400
113,900 MB/s
Core2 Quad Q6600
102,800 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core2 Quad Q9300

GeekBench (64-bit) Data courtesy Primate Labs

Core2 Quad Q9300


Core2 Quad Q9300

PassMark Data courtesy Passmark

Core2 Quad Q9300

PassMark (Single Core)

Core2 Quad Q9300

Reviews Word on the street for the Intel Core2 Quad Q9300

For the budget minded, it's one of the best price/performance CPUs you can find.

What People Are Saying Give it to me straight

Socket Type

Hitting that 3.37GHz clockspeed means running the northbridge at 450MHz - quad pumped to an effective 1.8GHz.
by Tech Radar (Feb, 2008)
Using a decent Zalman copper cooler and running stock voltages, our Q9300 sample will run all day long at a rock-solid 3.37GHz.
by Tech Radar (Feb, 2008)
We can't be sure the 9300's failure to boot beyond 3.37GHz wasn't as much down to the motherboard as the chip itself.
by Tech Radar (Feb, 2008)


The only question mark involves the combination of the 1,333MHz bus and locked 7.5 ratio CPU multiplier.
by Tech Radar (Feb, 2008)
It also receives a faster 1,333MHz bus - handy for keeping all four of those power CPU cores fed with data.
by Tech Radar (Feb, 2008)
As for the Q9300's overclocking prowess, it's mostly good news.
by Tech Radar (Feb, 2008)


It can't be that big a downer on performance, can it?
by Tech Radar (Feb, 2008)
Other upgrades include a new Radix-16 Divider, to the benefit of all-round clock-for-clock grunt, and a Super Shuffle engine which bolsters floating point performance.
by Tech Radar (Feb, 2008)
It's the best compromise between price and performance in the white-hot new 45nm range.
by Tech Radar (Feb, 2008)


And of course, the 45nm process has so far proven to boast bags of overclocking headroom.
by Tech Radar (Feb, 2008)
Check back over the coming weeks as we'll have further analysis of the Q9300's overclocking nous with the aid of water cooling, voltage tweakery and alternative chipsets.
by Tech Radar (Feb, 2008)
The locked multiplier means overclocking must be achieved via the northbridge and processor bus.
by Tech Radar (Feb, 2008)


Those light advantages in core and bus frequencies along with the microarchitectural upgrades combine to ensure it has the edge on its relatively elderly 65nm sibling.
by Tech Radar (Feb, 2008)

Specifications Full list of technical specs


Clock speed 2.5 GHz
Cores Quad core
Socket type LGA 775
Is unlocked No


Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. SSE
  3. SSE2
  4. SSE4.1
  5. SSE3
  6. Supplemental SSE3
Supports dynamic frequency scaling Yes

power consumption

Annual home energy cost 22.89 $/year
Annual commercial energy cost 83.22 $/year
Performance per watt 1.44 pt/W
Typical power consumption 77.19W


Architecture x86-64
Threads 4 threads
L2 cache 6 MB
L2 cache per core 1.5 MB/core
Manufacture process 45 nm
Transistor count 456,000,000
Max CPUs 1
Clock multiplier 7
Voltage range 0.85 - 1.36V
Operating temperature Unknown - 71.4°C


Overclocked clock speed 3.38 GHz
Overclocked clock speed (Water) 3.61 GHz
Overclocked clock speed (Air) 3.38 GHz

integrated graphics

GPU None


Architecture FSB
Clock speed 1,333 MHz
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