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Intel Core 2 Duo T6400 vs Intel Core 2 Duo T6670

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 T6670

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The Intel Core 2 Duo T6670 is an entry level laptop processor based on the Penryn core. It offers only 2 MB level 2 cache and a mediocre clock rate of 2.2 GHz. Compared to the similar T6600, the T6670 offers Virtualization VT-x and a higher maximum temperature of 105°C.

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ModelIntel Core 2 Duo T6400Intel Core 2 Duo T6670
CodenamePenrynPenryn
SeriesIntel Core 2 DuoIntel Core 2 Duo
Series: Core 2 Duo Penryn
Intel Core 2 Duo T9900 compare3.06 GHz2 / 2 cores
Intel Core 2 Duo T9800 compare2.92 GHz2 / 2 cores
Intel Core 2 Duo P9700 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo T9600 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo P9600 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9550 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9500 compare2.6 GHz2 / 2 cores
Intel Core 2 Duo SP9600 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P9500 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo T9400 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P8800 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9300 compare2.5 GHz2 / 2 cores
Intel Core 2 Duo P8700 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo SP9400 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo P8600 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo T8300 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo SP9300 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P8400 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P7570 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P7550 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo T6770 compare2.3 GHz2 / 2 cores
Intel Core 2 Duo SL9600 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo P7450 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo T66702.2 GHz2 / 2 cores
Intel Core 2 Duo T6600 compare2.2 GHz2 / 2 cores
Intel Core 2 Duo T8100 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo P7370 compare2 GHz2 / 2 cores
Intel Core 2 Duo P7350 compare2 GHz2 / 2 cores
Intel Core 2 Duo T6570 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo T6500 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo SL9400 compare1.86 GHz2 / 2 cores
Intel Core 2 Duo SL9380 compare1.8 GHz2 / 2 cores
Intel Core 2 Duo T6400 « 2 GHz2 / 2 cores
Intel Core 2 Duo SL9300 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9600 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9400 compare1.4 GHz2 / 2 cores
Intel Core 2 Duo SU7300 compare1.3 GHz2 / 2 cores
Intel Core 2 Duo SU9300 compare1.2 GHz2 / 2 cores
Intel Core 2 Duo T9900 compare3.06 GHz2 / 2 cores
Intel Core 2 Duo T9800 compare2.92 GHz2 / 2 cores
Intel Core 2 Duo P9700 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo T9600 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo P9600 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9550 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9500 compare2.6 GHz2 / 2 cores
Intel Core 2 Duo SP9600 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P9500 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo T9400 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P8800 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9300 compare2.5 GHz2 / 2 cores
Intel Core 2 Duo P8700 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo SP9400 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo P8600 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo T8300 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo SP9300 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P8400 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P7570 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P7550 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo T6770 compare2.3 GHz2 / 2 cores
Intel Core 2 Duo SL9600 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo P7450 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo T6670 « 2.2 GHz2 / 2 cores
Intel Core 2 Duo T6600 compare2.2 GHz2 / 2 cores
Intel Core 2 Duo T8100 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo P7370 compare2 GHz2 / 2 cores
Intel Core 2 Duo P7350 compare2 GHz2 / 2 cores
Intel Core 2 Duo T6570 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo T6500 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo SL9400 compare1.86 GHz2 / 2 cores
Intel Core 2 Duo SL9380 compare1.8 GHz2 / 2 cores
Intel Core 2 Duo T64002 GHz2 / 2 cores
Intel Core 2 Duo SL9300 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9600 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9400 compare1.4 GHz2 / 2 cores
Intel Core 2 Duo SU7300 compare1.3 GHz2 / 2 cores
Intel Core 2 Duo SU9300 compare1.2 GHz2 / 2 cores
Clock2000 MHz2200 MHz
FSB800800
L2 Cache2 MB2 MB
Cores / Threads2 / 22 / 2
TDP35 Watt35 Watt
Technology45 nm45 nm
max. Temp.105 °C105 °C
SocketPGA478PGA478
FeaturesMMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), IDA (Intel Dynamic Acceleration)
Architecturex86x86
Announced
Manufacturerark.intel.comark.intel.com
Transistors410 Million
Die Size107 mm2

Benchmarks

Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 2082     avg: 2115     median: 2115 (13%)     max: 2154 Points
min: 2352     avg: 2365     median: 2365 (14%)     max: 2378 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 3704     avg: 3963     median: 4005 (3%)     max: 4078 Points
min: 4428     avg: 4434     median: 4430 (3%)     max: 4444 Points
wPrime 2.10 - wPrime 2.0 1024m *
1249 s (15%)
2196 s (26%)
wPrime 2.10 - wPrime 2.0 32m *
39.4 s (8%)
min: 34.97     avg: 52     median: 52 (10%)     max: 69.1 s
3DMark 06 - CPU - 3DMark 06 - CPU
min: 1711     avg: 1764     median: 1767.5 (4%)     max: 1819 Points
1850 Points (4%)
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 26     avg: 28.8     median: 26.5 (6%)     max: 34 s
min: 23.87     avg: 33.4     median: 33.4 (7%)     max: 43 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 61     avg: 64     median: 64 (3%)     max: 67 s
101 s (4%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 1368     avg: 1532     median: 1531.5 (7%)     max: 1695 s
2241 s (10%)
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 18396     avg: 18438     median: 18437.5 (9%)     max: 18479 MIPS
11254 MIPS (5%)
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 14630     avg: 14670     median: 14670 (11%)     max: 14710 MFLOPS
8839 MFLOPS (7%)
PCMark 05 - PCMark 05 - Standard
min: 4479     avg: 5038     median: 4916 (10%)     max: 6001 Points
min: 4384     avg: 4567     median: 4559 (9%)     max: 4757 Points
Windows Vista Experience Index - Windows Vista Leistungsindex - Prozessor
100%
1 T6400 +
4.9 Points (70%)
Windows 7 Experience Index - Win7 CPU
100%
1 T6670 +
5.6 Points (72%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
100%
1 T6400 +
3909 Points (3%)

Average Benchmarks Intel Core 2 Duo T6400 → 100% n=11

Average Benchmarks Intel Core 2 Duo T6670 → 80% n=11

- Range of benchmark values for this graphics card
red legend - Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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v1.33
log 28. 15:30:39

#0 ran 0s before starting gpusingle class +0s ... 0s

#1 checking url part for id 454 +0s ... 0s

#2 checking url part for id 467 +0s ... 0s

#3 not redirecting to Ajax server +0s ... 0s

#4 did not recreate cache, as it is less than 5 days old! Created at Mon, 28 Apr 2025 05:16:39 +0200 +0s ... 0s

#5 composed specs +0.001s ... 0.001s

#6 did output specs +0s ... 0.001s

#7 getting avg benchmarks for device 454 +0s ... 0.002s

#8 got single benchmarks 454 +0.001s ... 0.003s

#9 getting avg benchmarks for device 467 +0.001s ... 0.004s

#10 got single benchmarks 467 +0.006s ... 0.009s

#11 got avg benchmarks for devices +0s ... 0.009s

#12 min, max, avg, median took s +0.008s ... 0.018s

#13 return log +0.003s ... 0.02s

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2023-07- 1)