Intel Core 2 Duo T6400 vs Intel Core 2 Duo P8400

Intel Core 2 Duo T6400

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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 P8400

► remove Intel P8400

The Intel Core 2 Duo P8400 is a dual core processor for laptops. It features 2.26 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).

The performance of the P8400 is on par with the fast Turion II Ultra with about 2.4 to 2.6 GHz. Modern demanding games like Supreme Commander may be limited by the CPU performance. High end gamers should choose a higher clocked Core 2 Duo (or Core i5 / i7).

The P8400 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 P8400 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 T6400Intel Core 2 Duo P8400
Intel Core 2 DuoIntel Core 2 Duo
PenrynPenryn
: Core 2 Duo Penryn
Intel Core 2 Duo T9900 (compare)3060 MHz2 / 2
Intel Core 2 Duo T9800 (compare)2920 MHz2 / 2
Intel Core 2 Duo P9700 (compare)2800 MHz2 / 2
Intel Core 2 Duo T9600 (compare)2800 MHz2 / 2
Intel Core 2 Duo P9600 (compare)2660 MHz2 / 2
Intel Core 2 Duo T9550 (compare)2660 MHz2 / 2
Intel Core 2 Duo T9500 (compare)2600 MHz2 / 2
Intel Core 2 Duo SP9600 (compare)2530 MHz2 / 2
Intel Core 2 Duo P9500 (compare)2530 MHz2 / 2
Intel Core 2 Duo T9400 (compare)2530 MHz2 / 2
Intel Core 2 Duo P8800 (compare)2660 MHz2 / 2
Intel Core 2 Duo T9300 (compare)2500 MHz2 / 2
Intel Core 2 Duo P8700 (compare)2530 MHz2 / 2
Intel Core 2 Duo SP9400 (compare)2400 MHz2 / 2
Intel Core 2 Duo P8600 (compare)2400 MHz2 / 2
Intel Core 2 Duo T8300 (compare)2400 MHz2 / 2
Intel Core 2 Duo SP9300 (compare)2260 MHz2 / 2
Intel Core 2 Duo P84002260 MHz2 / 2
Intel Core 2 Duo P7570 (compare)2260 MHz2 / 2
Intel Core 2 Duo P7550 (compare)2260 MHz2 / 2
Intel Core 2 Duo T6770 (compare)2300 MHz2 / 2
Intel Core 2 Duo SL9600 (compare)2130 MHz2 / 2
Intel Core 2 Duo P7450 (compare)2130 MHz2 / 2
Intel Core 2 Duo T6670 (compare)2200 MHz2 / 2
Intel Core 2 Duo T6600 (compare)2200 MHz2 / 2
Intel Core 2 Duo T8100 (compare)2100 MHz2 / 2
Intel Core 2 Duo P7370 (compare)2000 MHz2 / 2
Intel Core 2 Duo P7350 (compare)2000 MHz2 / 2
Intel Core 2 Duo T6570 (compare)2100 MHz2 / 2
Intel Core 2 Duo T6500 (compare)2100 MHz2 / 2
Intel Core 2 Duo SL9400 (compare)1860 MHz2 / 2
Intel Core 2 Duo SL9380 (compare)1800 MHz2 / 2
» Intel Core 2 Duo T64002000 MHz2 / 2
Intel Core 2 Duo SL9300 (compare)1600 MHz2 / 2
Intel Core 2 Duo SU9600 (compare)1600 MHz2 / 2
Intel Core 2 Duo SU9400 (compare)1400 MHz2 / 2
Intel Core 2 Duo SU7300 (compare)1300 MHz2 / 2
Intel Core 2 Duo SU9300 (compare)1200 MHz2 / 2
Intel Core 2 Duo T9900 (compare)3060 MHz2 / 2
Intel Core 2 Duo T9800 (compare)2920 MHz2 / 2
Intel Core 2 Duo P9700 (compare)2800 MHz2 / 2
Intel Core 2 Duo T9600 (compare)2800 MHz2 / 2
Intel Core 2 Duo P9600 (compare)2660 MHz2 / 2
Intel Core 2 Duo T9550 (compare)2660 MHz2 / 2
Intel Core 2 Duo T9500 (compare)2600 MHz2 / 2
Intel Core 2 Duo SP9600 (compare)2530 MHz2 / 2
Intel Core 2 Duo P9500 (compare)2530 MHz2 / 2
Intel Core 2 Duo T9400 (compare)2530 MHz2 / 2
Intel Core 2 Duo P8800 (compare)2660 MHz2 / 2
Intel Core 2 Duo T9300 (compare)2500 MHz2 / 2
Intel Core 2 Duo P8700 (compare)2530 MHz2 / 2
Intel Core 2 Duo SP9400 (compare)2400 MHz2 / 2
Intel Core 2 Duo P8600 (compare)2400 MHz2 / 2
Intel Core 2 Duo T8300 (compare)2400 MHz2 / 2
Intel Core 2 Duo SP9300 (compare)2260 MHz2 / 2
» Intel Core 2 Duo P84002260 MHz2 / 2
Intel Core 2 Duo P7570 (compare)2260 MHz2 / 2
Intel Core 2 Duo P7550 (compare)2260 MHz2 / 2
Intel Core 2 Duo T6770 (compare)2300 MHz2 / 2
Intel Core 2 Duo SL9600 (compare)2130 MHz2 / 2
Intel Core 2 Duo P7450 (compare)2130 MHz2 / 2
Intel Core 2 Duo T6670 (compare)2200 MHz2 / 2
Intel Core 2 Duo T6600 (compare)2200 MHz2 / 2
Intel Core 2 Duo T8100 (compare)2100 MHz2 / 2
Intel Core 2 Duo P7370 (compare)2000 MHz2 / 2
Intel Core 2 Duo P7350 (compare)2000 MHz2 / 2
Intel Core 2 Duo T6570 (compare)2100 MHz2 / 2
Intel Core 2 Duo T6500 (compare)2100 MHz2 / 2
Intel Core 2 Duo SL9400 (compare)1860 MHz2 / 2
Intel Core 2 Duo SL9380 (compare)1800 MHz2 / 2
Intel Core 2 Duo T64002000 MHz2 / 2
Intel Core 2 Duo SL9300 (compare)1600 MHz2 / 2
Intel Core 2 Duo SU9600 (compare)1600 MHz2 / 2
Intel Core 2 Duo SU9400 (compare)1400 MHz2 / 2
Intel Core 2 Duo SU7300 (compare)1300 MHz2 / 2
Intel Core 2 Duo SU9300 (compare)1200 MHz2 / 2
2000 MHz2260 MHz
8001066
2 MB3 MB
2 / 22 / 2
35 25
45 45 1.05-1.15
105 °C105 °C
PGA478Socket P
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 Technology
Intel Core 2 Duo T6400Intel Core 2 Duo P8400
128 KB
410
107 mm2
$209 U.S.

Cinebench R10 - Rendering Single 32Bit
min: 2082     avg: 2115.1     median: 2115 (23%)     max: 2154 Points
min: 2418     avg: 2526.9     median: 2497 (27%)     max: 2882 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 3704     avg: 3962.9     median: 4005 (6%)     max: 4078 Points
min: 4507     avg: 4700.7     median: 4630 (7%)     max: 5314 Points
wPrime 2.0x - 1024m *
1249.5 seconds (15%)
wPrime 2.0x - 32m *
39.4 seconds (8%)
34.2 seconds (7%)
3DMark 06 - CPU
min: 1711     avg: 1757     median: 1749 (12%)     max: 1819 Points
min: 1922     avg: 2031.8     median: 2051 (14%)     max: 2084 Points
3DMark 06 - CPU - Standard 1280x768 1280x768
1791 Points (59%)
min: 2034     avg: 2035     median: 2035 (67%)     max: 2036 Points
3DMark 06 - CPU - Standard 1280x720
1762 Points (55%)
2014 Points (63%)
3DMark 06 - CPU - 1280x800
min: 2000     avg: 2028.8     median: 2036 (71%)     max: 2042 Points
Super Pi mod 1.5 XS 1M *
min: 26     avg: 28.8     median: 26 (6%)     max: 34 Seconds
min: 21     avg: 22.1     median: 22 (5%)     max: 22 Seconds
Super Pi mod 1.5 XS 2M *
min: 61     avg: 64     median: 64 (3%)     max: 67 Seconds
min: 50     avg: 51.5     median: 51 (2%)     max: 52 Seconds
Super Pi Mod 1.5 XS 32M *
min: 1368     avg: 1531.5     median: 1531 (7%)     max: 1695 Seconds
1212 Seconds (5%)
SiSoft Sandra Dhrystone (MIPS)
min: 18396     avg: 18437.5     median: 18437 (9%)     max: 18479 MIPS
21204 MIPS (10%)
SiSoft Sandra Whetstone (MFLOPS)
min: 14630     avg: 14670     median: 14670 (11%)     max: 14710 MFLOPS
15993 MFLOPS (12%)
PCMark 05 - Standard 1024x768
min: 4479     avg: 5038     median: 4916 (31%)     max: 6001 Points
min: 3410     avg: 5116.6     median: 5201 (33%)     max: 6255 Points
Windows Vista Experience Index - CPU
4.9 Points (70%)
5.2 Points (74%)
3DMark Vantage - P CPU no PhysX 1280x1024
3909 Points (5%)
min: 3518     avg: 4111     median: 4340 (6%)     max: 4475 Points

Average Benchmarks Intel Core 2 Duo T6400 → 100%

Average Benchmarks Intel Core 2 Duo P8400 → 110%

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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)