Core 2 Duo T8100 vs Core 2 Duo T9400

Place in the ranking	2776	2907
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core 2 Duo	Intel Core 2 Duo
Power efficiency	1.73	1.30
Architecture codename	Penryn (2008−2011)	Penryn (2008−2011)
Release date	15 July 2008 (16 years ago)	10 January 2008 (16 years ago)
Launch price (MSRP)	$316	$209

Detailed specifications

Core 2 Duo T9400 and Core 2 Duo T8100 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)	2 (Dual-core)
Threads	2	2
Base clock speed	2.53 GHz	2.1 GHz
Boost clock speed	2.53 GHz	2.1 GHz
Bus rate	1066 MHz	800 MHz
L1 cache	128 KB	no data
L2 cache	6 MB	3 MB
L3 cache	6 MB L2 Cache	3 MB L2 Cache
Chip lithography	45 nm	45 nm
Die size	107 mm²	107 mm²
Maximum core temperature	105 °C	105 °C
Number of transistors	410 Million	410 Million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.05V-1.162V	1V-1.25V

Compatibility

Information on Core 2 Duo T9400 and Core 2 Duo T8100 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.

Socket	BGA479,BGA956,PBGA479,PGA478	BGA479,PGA478
Power consumption (TDP)	35 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T9400 and Core 2 Duo T8100. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	-	+
Demand Based Switching	-	-
FSB parity	-	-

Security technologies

Core 2 Duo T9400 and Core 2 Duo T8100 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo T9400 and Core 2 Duo T8100 are enumerated here.

VT-x

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 T9400 0.64
+33.3%

Core 2 Duo T8100 0.48

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 T9400 1011
+31.3%

Core 2 Duo T8100 770

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 T9400 322
+18.8%

Core 2 Duo T8100 271

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 T9400 510
+18.9%

Core 2 Duo T8100 429

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 T9400 2818
+21.5%

Core 2 Duo T8100 2320

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 T9400 5268
+23%

Core 2 Duo T8100 4282

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 T9400 2304
+22.7%

Core 2 Duo T8100 1878

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Core 2 Duo T9400 31
+21%

Core 2 Duo T8100 37.5