Intel Core 2 Duo T9800 vs Intel Celeron N5105 vs Intel Core 2 Duo T9400
Intel Core 2 Duo T9800
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The Intel Core 2 Duo T9800 was the top dual core CPU for laptops at the time of introduction. Later it was topped by the Core 2 Duo T9900 / X9100. Still the T9800 is a high end laptop CPU which is well suited for single and dual threaded applications.
Due to the high clock speed, the T9800 offers enough performance for demanding games (in 2009) and applications. On average, only faster dual cores (like the T9900 or fast Core i7) or Core i7 quad cores can be faster than the T9800.
The T9800 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 T9800 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 Celeron N5105
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The Intel Celeron N5105 is a quad-core SoC of the Jasper Lake series that is primarily intended for inexpensive desktops and was announced in early 2021. The four Tremont CPU cores clock between 2 and 2.9 GHz (single core Burst) and offer no HyperThreading (SMT). The N5105 uses 1.5 MB L2 and 4 MB L3 cache. The chip is manufactured in 10nm at Intel (most likely in the same process as Ice Lake).
CPU Architecture
The processor architecture is called Tremont and a complete redesign compared to the old Golmont Plus cores in the predecessor. According to Intel, the single thread performance of a core could be improved by 30% on average (10 - 80% in all tests of SPECint and SPECfp).
Features
In addition to the quad-core CPU block, the SoC integrates a 24 EU Intel UHD Graphics GPU clocked from 450 - 800 MHz and a LPDDR4(x) dual channel memory controller (up to 16 GB and 2933 MHz). The chip now also partly integrates Wi-Fi 6 (Gig+), 8 PCIe 3.0 lanes, 14 USB 2.0/ 3.2 ports and two SATA 6.0 ports. The package got bigger and measures 35 x 24 mm (compared to 25 x 24 mm for the N5030 e.g.). The SoC is directly soldered to the mainboard (BGA) and can't be easily replaced.
Performance
The average N5105 in our database is in the same league as the Core i3-1005G1 and the Ryzen 3 3250U, as far as multi-thread benchmark scores are concerned. Your mileage may vary depending on how high the CPU power limits are.
Power Consumption
Similar to the predecessor, Intel specifies the TDP with 10 Watts (mobile and lower clocked N5100 6W). The chip can therefore be cooled passively in theory, but SKUs with fans are possible as well.
Intel Core 2 Duo T9400
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The Intel Core 2 Duo T9400 was a uppder middle class dual core CPU for laptops, at the time of introduction. It is similar to the Core 2 Duo P9500 except for the higher TDP of 35 versus 25 Watt).
Due to the relatively high clock speed and 6MB Level 2 cache, the T9400 offers enough performance for most demanding games (in 2009) and applications.
The T9400 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 to save power (in idle mode).
Model | Intel Core 2 Duo T9800 | Intel Celeron N5105 | Intel Core 2 Duo T9400 | ||||||||||||||||||||||||||||||||
Codename | Penryn | Jasper Lake | Penryn | ||||||||||||||||||||||||||||||||
Series | Intel Core 2 Duo | Intel Jasper Lake | Intel Core 2 Duo | ||||||||||||||||||||||||||||||||
Series: Core 2 Duo Penryn |
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Clock | 2920 MHz | 2000 - 2900 MHz | 2530 MHz | ||||||||||||||||||||||||||||||||
FSB | 1066 | 1066 | |||||||||||||||||||||||||||||||||
L1 Cache | 128 KB | 128 KB | |||||||||||||||||||||||||||||||||
L2 Cache | 6 MB | 1.5 MB | 6 MB | ||||||||||||||||||||||||||||||||
Cores / Threads | 2 / 2 | 4 / 4 | 2 / 2 | ||||||||||||||||||||||||||||||||
TDP | 35 Watt | 10 Watt | 35 Watt | ||||||||||||||||||||||||||||||||
Transistors | 410 Million | 410 Million | |||||||||||||||||||||||||||||||||
Technology | 45 nm | 10 nm | 45 nm | ||||||||||||||||||||||||||||||||
Voltage | 1-1.25 V V | 1.050V-1.162V V | |||||||||||||||||||||||||||||||||
Die Size | 107 mm2 | 107 mm2 | |||||||||||||||||||||||||||||||||
max. Temp. | 105 °C | 105 °C | 105 °C | ||||||||||||||||||||||||||||||||
Socket | Socket P (BGA479, PGA478) | BGA1338 | BGA479, PGA478 | ||||||||||||||||||||||||||||||||
Features | Virtualization (VT-x), Trusted Execution, Intel 64, Enhanced Speedstep, Execute Disable Bit | DDR4-2933/LPDDR4x-2933 RAM, PCIe 3, GNA, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, VMX, SMEP, SMAP, EIST, TM1, TM2, Turbo, AES-NI, RDRAND, RDSEED, SHA | Virtualization Technology (VT-x), Trusted Execution, Intel 64, Enhanced Speedstep, Execute Disable Bit | ||||||||||||||||||||||||||||||||
Architecture | x86 | x86 | x86 | ||||||||||||||||||||||||||||||||
$530 U.S. | $316 U.S. | ||||||||||||||||||||||||||||||||||
Announced | |||||||||||||||||||||||||||||||||||
Manufacturer | ark.intel.com | ark.intel.com | ark.intel.com | ||||||||||||||||||||||||||||||||
L3 Cache | 4 MB | ||||||||||||||||||||||||||||||||||
iGPU | Intel UHD Graphics (Jasper Lake 24 EU) (450 - 800 MHz) |
Benchmarks
Average Benchmarks Intel Core 2 Duo T9800 → 0% n=0
Average Benchmarks Intel Celeron N5105 → 0% n=0
Average Benchmarks Intel Core 2 Duo T9400 → 0% n=0

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