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Intel Dual core T4500 Vs Pentium B940

1. The Dual core T4500 is a older processor belonging to Penryn architecture. The B940 is based upon the newest Sandy Bridge architecture ( though the turbo boost and the Hyperthreading is missing in it). The improvement in architecture brings better performance for the same clock frequency.

2. The Dual core T4500 is clocked at 2.3 GHz while the Pentium B940 is 2.0 GHz. However, the B940 is still (slightly) better in performance than the T4500.

3. The Pentium B940 has integrated memory controller. The DDR3 memory connects directly to the processor. In T4500, the memory does not connect directly to the processor. It connect to a chip, called north bridge – using a “Front Side Bus”. The North Bridge chip then connects to the memory. A memory transfer from processor to memory first goes through the north bridge chip and from north bridge chip it goes to the memory. This increases the latency and reduces memory throughput ( amount of data transferred per second).

4. The Pentium B940 has integrated graphics. Dual core T4500 does not has a integrated graphics. A typical T4500 system will have an external discrete graphics component on the system. In Pentium B940 we do not need an external graphics unless we need a high end gaming. Not requiring a graphics component reduces power consumption and also reduces system complexity ( from notebook motherboard manufacture perspective) and cost.

Table : Intel Pentium T4500 Vs B940 Feature Differences

Feature Intel Pentium T4500 Intel Pentium B940
Core Frequency  2.30 GHz 2.0 GHz
No. Of Cores
2 2 ( No Hyperthreading)
Cache Organization
1 MB L2 2 MB L3
Turbo Frequency
2.3 GHz No Turbo
TDP Rating
35 Watts 35 Watts
64 Bit Support
45 nm 32 nm
Integrated Memory Controller
None DDR3-1333
Integrated Graphics
None Yes, 650 MHz Base, 1.1 GHz Max


Table : Intel Pentiun T4500 Vs Intel Pentium B940 Benchmarking Comparison


Benchmarks Intel Pentium T4500 Intel Pentium B940
PassMark Score
1549 1874
Super Pi 2M (Lower in better)
63 seconds 45.5 seconds
3D Mark 06 CPU
1910 2030
Windows 7 Experience Score
5.8 5.9

Some more details of Intel Pentiun T4500

An older Penryn processor, the dual core Pentium T4500 is still good enough for entry level computing. Intel has, however, oved fast and has brough many newer changes in the architecture in the Nehalem and Sandy Bridge processor including the integrated memory controller and integrated graphics.

Some more details of Intel Pentium B940

The architecture of the Pentium B940 is based upon Sandy Bridge. Performance wise, it is better than the Arrandale notebook based Pentium processors ( Pentium P6100 and P6200). However, the turbo boost feature is disabled in Pentium B940. Additionally the Hyperthreading is disabled leading to inferior performance as compared to the second generation Intel core i3 processors.


Jump to forum for an informal discussion of the B940 versus Dual Core T4500.

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