Core 2 Quad Q9550 vs Core 2 Duo T7800

Place in the ranking	2842	2170
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core 2 Duo	Core 2 Quad (Desktop)
Power efficiency	1.51	1.46
Architecture codename	Merom (2006−2008)	Yorkfield (2007−2009)
Release date	18 August 2007 (17 years ago)	no data
Launch price (MSRP)	$515	no data

Detailed specifications

Core 2 Duo T7800 and Core 2 Quad (Desktop) Q9550 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	2 (Dual-core)	4 (Quad-Core)
Threads	2	4
Base clock speed	2.6 GHz	no data
Boost clock speed	2.6 GHz	2.83 GHz
Bus rate	800 MHz	1333 MHz
L1 cache	64 KB	64K (per core)
L2 cache	4 MB	12288 KB
L3 cache	0 KB	0 KB
Chip lithography	65 nm	45 nm
Die size	143 mm²	2x 107 mm²
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	no data	71 °C
Number of transistors	291 Million	820 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.075V-1.25V	no data

Compatibility

Information on Core 2 Duo T7800 and Core 2 Quad (Desktop) Q9550 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	PBGA479,PPGA478	LGA775
Power consumption (TDP)	35 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T7800 and Core 2 Quad (Desktop) Q9550. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Duo T7800 and Core 2 Quad (Desktop) Q9550 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 Duo T7800 and Core 2 Quad (Desktop) Q9550 are enumerated here.

VT-x

no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T7800 and Core 2 Quad (Desktop) Q9550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR1,DDR2,DDR3

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 Duo T7800 0.56

Core 2 Quad Q9550 1.47
+163%

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.

Core 2 Duo T7800 884

Core 2 Quad Q9550 2338
+164%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Duo T7800 237

Core 2 Quad Q9550 370
+56.1%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Duo T7800 364

Core 2 Quad Q9550 1038
+185%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Core 2 Duo T7800 2663

Core 2 Quad Q9550 3106
+16.6%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Core 2 Duo T7800 5014

Core 2 Quad Q9550 10825
+116%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Core 2 Duo T7800 2258

Core 2 Quad Q9550 4230
+87.3%

Gaming performance

Pros & cons summary

Performance score	0.56	1.47
Physical cores	2	4
Threads	2	4
Chip lithography	65 nm	45 nm
Power consumption (TDP)	35 Watt	95 Watt

Core 2 Duo T7800 has 171.4% lower power consumption.

Core 2 Quad Q9550, on the other hand, has a 162.5% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.

The Core 2 Quad Q9550 is our recommended choice as it beats the Core 2 Duo T7800 in performance tests.

Be aware that Core 2 Duo T7800 is a notebook processor while Core 2 Quad Q9550 is a desktop one.

Should you still have questions on choice between Core 2 Duo T7800 and Core 2 Quad Q9550, ask them in Comments section, and we shall answer.