Intel Core 2 Duo T6400 vs Intel Core 2 Duo T9900 vs Intel Core 2 Duo P8700

Intel Core 2 Duo T6400

► remove

The Intel Core 2 Duo T6400 is an entry level dual core processor for cheap laptops. It is based on the Penryn core but offers only 2 MB level 2 cache and a slow clock speed of 2 GHz. The performance should be sufficient for office and other casual tasks but high level gaming and HD video editing for example could be limited by the CPU performance.

Intel Core 2 Duo T9900

► remove Intel T9900

The Intel Core 2 Duo T9900 is the theoretical successor of the Core 2 Extreme X9100 (which also clocks at 3.06 GHz) that uses less power due to the modern stepping and the Enhanced Halt State (C1E). The only advantage of the X9100 is the free multiplikator (which allows easy overclocking of the CPU).

The T9900 is a fast dual core CPU for laptops which features 6 MB of shared level 2 cache and a TDP of 35 Watt. Due to the high clock speed, modern games (in 2009) should not be limited by the CPU speed. For single threaded applications it is one of the fastest CPUs for laptops (only beaten by the new Core i7 with enabled Turbo mode). 

The T9900 uses a Penryn (Montevina Update) core that features 2 integer units, 1 floating point unit, 1 load unit, and 1 store unit in a 14-stages long pipeline. Due to the Wide Dynamic Execution Technology, the core is able to simultaneously execute up to four instructions.

The integrated Enhanced Speedstep is able to downclock the core dynamically as low as 800 MHz to save power (in idle mode).

The Core 2 Duo T9900 can be used in a Socket P socket with 479 pins: Socket P / Micro Flip-Chip Pin Grid Array (Micro-FCPGA) requires 479-pin surface mount Zero Insertion Force (ZIF) socket (mPGA479M socket) or Micro Flip-Chip Ball Grid Array (Micro-FCBGA) for surface mount (479-ball).

Intel Core 2 Duo P8700

► remove Intel P8700

The Intel Core 2 Duo P8700 is a mid-range dual core processor for laptops. It features 2.53 GHz and a shared level 2 cache of 3 MB. Due to the smaller cache (Core 2 Duo T-Models got usually 6 MB at this clock rate), the TDP is only 25 Watt (instead of the 35 Watt of the T-models). Technically, the P8700 is a slower clocked P8800 CPU.

Due to the relatively high clock speed, modern games (in 2009) should not be limited by the CPU speed (in conjunction with a middle class graphics card). High end gamers should choose a higher clocked Dual Core instead (when using a high end GPU).

The P8700 uses a Penryn (Montevina Update) core that features 2 integer units, 1 floating point unit, 1 load unit, and 1 store unit in a 14-stages long pipeline. Due to the Wide Dynamic Execution Technology, the core is able to simultaneously execute up to four instructions.

The integrated Enhanced Speedstep is able to downclock the core dynamically as low as 1200 MHz to save power (in idle mode).

Intel Core 2 Duo T6400Intel Core 2 Duo T9900Intel Core 2 Duo P8700
Intel Core 2 DuoIntel Core 2 DuoIntel Core 2 Duo
PenrynPenrynPenryn
: Core 2 Duo Penryn
Intel Core 2 Duo T99003060 MHz2 / 2
Intel Core 2 Duo T98002920 MHz2 / 2
Intel Core 2 Duo P97002800 MHz2 / 2
Intel Core 2 Duo T96002800 MHz2 / 2
Intel Core 2 Duo P96002660 MHz2 / 2
Intel Core 2 Duo T95502660 MHz2 / 2
Intel Core 2 Duo T95002600 MHz2 / 2
Intel Core 2 Duo SP96002530 MHz2 / 2
Intel Core 2 Duo P95002530 MHz2 / 2
Intel Core 2 Duo T94002530 MHz2 / 2
Intel Core 2 Duo P88002660 MHz2 / 2
Intel Core 2 Duo T93002500 MHz2 / 2
Intel Core 2 Duo P87002530 MHz2 / 2
Intel Core 2 Duo SP94002400 MHz2 / 2
Intel Core 2 Duo P86002400 MHz2 / 2
Intel Core 2 Duo T83002400 MHz2 / 2
Intel Core 2 Duo SP93002260 MHz2 / 2
Intel Core 2 Duo P84002260 MHz2 / 2
Intel Core 2 Duo P75702260 MHz2 / 2
Intel Core 2 Duo P75502260 MHz2 / 2
Intel Core 2 Duo T67702300 MHz2 / 2
Intel Core 2 Duo SL96002130 MHz2 / 2
Intel Core 2 Duo P74502130 MHz2 / 2
Intel Core 2 Duo T66702200 MHz2 / 2
Intel Core 2 Duo T66002200 MHz2 / 2
Intel Core 2 Duo T81002100 MHz2 / 2
Intel Core 2 Duo P73702000 MHz2 / 2
Intel Core 2 Duo P73502000 MHz2 / 2
Intel Core 2 Duo T65702100 MHz2 / 2
Intel Core 2 Duo T65002100 MHz2 / 2
Intel Core 2 Duo SL94001860 MHz2 / 2
Intel Core 2 Duo SL93801800 MHz2 / 2
» Intel Core 2 Duo T64002000 MHz2 / 2
Intel Core 2 Duo SL93001600 MHz2 / 2
Intel Core 2 Duo SU96001600 MHz2 / 2
Intel Core 2 Duo SU94001400 MHz2 / 2
Intel Core 2 Duo SU73001300 MHz2 / 2
Intel Core 2 Duo SU93001200 MHz2 / 2
» Intel Core 2 Duo T99003060 MHz2 / 2
Intel Core 2 Duo T98002920 MHz2 / 2
Intel Core 2 Duo P97002800 MHz2 / 2
Intel Core 2 Duo T96002800 MHz2 / 2
Intel Core 2 Duo P96002660 MHz2 / 2
Intel Core 2 Duo T95502660 MHz2 / 2
Intel Core 2 Duo T95002600 MHz2 / 2
Intel Core 2 Duo SP96002530 MHz2 / 2
Intel Core 2 Duo P95002530 MHz2 / 2
Intel Core 2 Duo T94002530 MHz2 / 2
Intel Core 2 Duo P88002660 MHz2 / 2
Intel Core 2 Duo T93002500 MHz2 / 2
Intel Core 2 Duo P87002530 MHz2 / 2
Intel Core 2 Duo SP94002400 MHz2 / 2
Intel Core 2 Duo P86002400 MHz2 / 2
Intel Core 2 Duo T83002400 MHz2 / 2
Intel Core 2 Duo SP93002260 MHz2 / 2
Intel Core 2 Duo P84002260 MHz2 / 2
Intel Core 2 Duo P75702260 MHz2 / 2
Intel Core 2 Duo P75502260 MHz2 / 2
Intel Core 2 Duo T67702300 MHz2 / 2
Intel Core 2 Duo SL96002130 MHz2 / 2
Intel Core 2 Duo P74502130 MHz2 / 2
Intel Core 2 Duo T66702200 MHz2 / 2
Intel Core 2 Duo T66002200 MHz2 / 2
Intel Core 2 Duo T81002100 MHz2 / 2
Intel Core 2 Duo P73702000 MHz2 / 2
Intel Core 2 Duo P73502000 MHz2 / 2
Intel Core 2 Duo T65702100 MHz2 / 2
Intel Core 2 Duo T65002100 MHz2 / 2
Intel Core 2 Duo SL94001860 MHz2 / 2
Intel Core 2 Duo SL93801800 MHz2 / 2
Intel Core 2 Duo T64002000 MHz2 / 2
Intel Core 2 Duo SL93001600 MHz2 / 2
Intel Core 2 Duo SU96001600 MHz2 / 2
Intel Core 2 Duo SU94001400 MHz2 / 2
Intel Core 2 Duo SU73001300 MHz2 / 2
Intel Core 2 Duo SU93001200 MHz2 / 2
Intel Core 2 Duo T99003060 MHz2 / 2
Intel Core 2 Duo T98002920 MHz2 / 2
Intel Core 2 Duo P97002800 MHz2 / 2
Intel Core 2 Duo T96002800 MHz2 / 2
Intel Core 2 Duo P96002660 MHz2 / 2
Intel Core 2 Duo T95502660 MHz2 / 2
Intel Core 2 Duo T95002600 MHz2 / 2
Intel Core 2 Duo SP96002530 MHz2 / 2
Intel Core 2 Duo P95002530 MHz2 / 2
Intel Core 2 Duo T94002530 MHz2 / 2
Intel Core 2 Duo P88002660 MHz2 / 2
Intel Core 2 Duo T93002500 MHz2 / 2
» Intel Core 2 Duo P87002530 MHz2 / 2
Intel Core 2 Duo SP94002400 MHz2 / 2
Intel Core 2 Duo P86002400 MHz2 / 2
Intel Core 2 Duo T83002400 MHz2 / 2
Intel Core 2 Duo SP93002260 MHz2 / 2
Intel Core 2 Duo P84002260 MHz2 / 2
Intel Core 2 Duo P75702260 MHz2 / 2
Intel Core 2 Duo P75502260 MHz2 / 2
Intel Core 2 Duo T67702300 MHz2 / 2
Intel Core 2 Duo SL96002130 MHz2 / 2
Intel Core 2 Duo P74502130 MHz2 / 2
Intel Core 2 Duo T66702200 MHz2 / 2
Intel Core 2 Duo T66002200 MHz2 / 2
Intel Core 2 Duo T81002100 MHz2 / 2
Intel Core 2 Duo P73702000 MHz2 / 2
Intel Core 2 Duo P73502000 MHz2 / 2
Intel Core 2 Duo T65702100 MHz2 / 2
Intel Core 2 Duo T65002100 MHz2 / 2
Intel Core 2 Duo SL94001860 MHz2 / 2
Intel Core 2 Duo SL93801800 MHz2 / 2
Intel Core 2 Duo T64002000 MHz2 / 2
Intel Core 2 Duo SL93001600 MHz2 / 2
Intel Core 2 Duo SU96001600 MHz2 / 2
Intel Core 2 Duo SU94001400 MHz2 / 2
Intel Core 2 Duo SU73001300 MHz2 / 2
Intel Core 2 Duo SU93001200 MHz2 / 2
2000 MHz3060 MHz2530 MHz
80010661066
2 MB6 MB3 MB
2 / 22 / 22 / 2
35 35 25
45 45 1.05-1.2125 V45 1.00V - 1.25V
105 °C105 °C105 °C
PGA478Socket P (BGA479, PGA478)BGA479, PGA478
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), IDA (Intel Dynamic Acceleration)SSE4.1, Virtualization Technology, Execute Disable Bit, Enhanced Speedstep, Ehnaced Halt State (C1E), 64 Bit, Trusted Execution TechnologySSE4.1, Virtualization Technology, Execute Disable Bit, Enhanced Speedstep, Ehnaced Halt State (C1E), 64 Bit, Trusted Execution Technology
Intel Core 2 Duo T6400Intel Core 2 Duo T9900Intel Core 2 Duo P8700
128 KB
410 410
107 mm2107 mm2
$530 U.S.$209 U.S.

Cinebench R10 - Rendering Single 32Bit
min: 2082     avg: 2115     median: 2115 (22%)     max: 2154 Points
min: 3353     avg: 3538     median: 3537.5 (36%)     max: 3722 Points
min: 2516     avg: 2826     median: 2805 (29%)     max: 3057 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 3704     avg: 3963     median: 4005 (7%)     max: 4078 Points
min: 6318     avg: 6886     median: 7094 (12%)     max: 7247 Points
min: 4741     avg: 5273     median: 5169 (9%)     max: 5882 Points
wPrime 2.10 - 1024m *
1249 seconds (15%)
799 seconds (9%)
min: 974.687     avg: 1020     median: 1038.2 (12%)     max: 1048 seconds
wPrime 2.10 - 32m *
39.4 seconds (8%)
25.1 seconds (5%)
min: 30.3     avg: 31.6     median: 31.6 (6%)     max: 32.9 seconds
3DMark 06 - CPU - CPU Score
min: 1711     avg: 1764     median: 1767.5 (12%)     max: 1819 Points
2787 Points (19%)
min: 2085     avg: 2231     median: 2253.5 (15%)     max: 2285 Points
Super Pi mod 1.5 XS 1M - 1M *
min: 26     avg: 28.8     median: 26.5 (6%)     max: 34 Seconds
15.3 Seconds (3%)
min: 19.75     avg: 22.7     median: 20.5 (4%)     max: 30 Seconds
Super Pi mod 1.5 XS 2M - 2M *
min: 61     avg: 64     median: 64 (3%)     max: 67 Seconds
37.1 Seconds (2%)
min: 46.457     avg: 54     median: 50.4 (2%)     max: 69 Seconds
Super Pi Mod 1.5 XS 32M - 32M *
min: 1368     avg: 1532     median: 1531.5 (7%)     max: 1695 Seconds
972 Seconds (4%)
min: 1187.87     avg: 1227     median: 1226.9 (5%)     max: 1266 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 18396     avg: 18438     median: 18437.5 (9%)     max: 18479 MIPS
25083 MIPS (12%)
min: 19740     avg: 21536     median: 21536 (10%)     max: 23332 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 14630     avg: 14670     median: 14670 (11%)     max: 14710 MFLOPS
20460 MFLOPS (16%)
min: 17580     avg: 18070     median: 18070 (14%)     max: 18560 MFLOPS
PCMark 05 - Standard 1024x768
min: 4479     avg: 5038     median: 4916 (31%)     max: 6001 Points
8922 Points (56%)
min: 4987     avg: 5478     median: 5364 (34%)     max: 6196 Points
Windows Vista Experience Index - CPU
4.9 Points (70%)
5.7 Points (81%)
5.4 Points (77%)
Windows 7 Experience Index - Processor
6.1 points (78%)
3DMark Vantage - P CPU no PhysX 1280x1024
3909 Points (5%)
6045 Points (8%)
min: 4831     avg: 4872     median: 4872 (7%)     max: 4913 Points

Average Benchmarks Intel Core 2 Duo T6400 → 100%

Average Benchmarks Intel Core 2 Duo T9900 → 134%

Average Benchmarks Intel Core 2 Duo P8700 → 113%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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Redaktion, 2017-09- 8 (Update: 2017-09-11)