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Gaming Performance Comparison

Recommended System Requirements
Game Pentium Dual Core B950 2.1GHz Core i7-640UM 2-Core 1.2GHz
Cyberpunk 2077 360% 277%
Assassins Creed: Valhalla 519% 408%
Call of Duty: Black Ops Cold War 345% 266%
Watch Dogs Legion 519% 408%
FIFA 21 330% 253%
Microsoft Flight Simulator 421% 327%
Godfall 788% 629%
Grand Theft Auto VI 655% 520%
World of Warcraft: Shadowlands 615% 487%
Genshin Impact 248% 186%

In terms of overall gaming performance, the Intel Core i7-640UM 2-Core 1.2GHz is noticeably better than the Intel Pentium Dual Core B950 2.1GHz when it comes to running the latest games. This also means it will be less likely to bottleneck more powerful GPUs, allowing them to achieve more of their gaming performance potential.

The Pentium Dual Core was released over a year more recently than the Core i7-640UM 2-Core, and so the Pentium Dual Core is likely to have better levels of support, and will be more optimized for running the latest games.

The Pentium Dual Core and the Core i7-640UM 2-Core both have 2 cores, and so are quite likely to struggle with the latest games, or at least bottleneck high-end graphics cards when running them. With a decent accompanying GPU, the Pentium Dual Core and the Core i7-640UM 2-Core may still be able to run slightly older games fairly effectively.

More important for gaming than the number of cores and threads is the clock rate. Problematically, unless the two CPUs are from the same family, this can only serve as a general guide and nothing like an exact comparison, because the clock cycles per instruction (CPI) will vary so much.

The Pentium Dual Core and Core i7-640UM 2-Core are not from the same family of CPUs, so their clock speeds are by no means directly comparable. Bear in mind, then, that while the Pentium Dual Core has a 0.9 GHz faster frequency, this is not always an indicator that it will be superior in performance, despite frequency being crucial when trying to avoid GPU bottlenecking. In this case, however, the difference is probably a good indicator that the is superior.

Aside from the clock rate, the next-most important CPU features for PC game performance are L2 and L3 cache size. Faster than RAM, the more cache available, the more data that can be stored for lightning-fast retrieval. L1 Cache is not usually an issue anymore for gaming, with most high-end CPUs eking out about the same L1 performance, and L2 is more important than L3 - but L3 is still important if you want to reach the highest levels of performance. Bear in mind that although it is better to have a larger cache, the larger it is, the higher the latency, so a balance has to be struck.

The Pentium Dual Core and the Core i7-640UM 2-Core have the same L2 cache size, but the Core i7-640UM 2-Core has a 2 MB bigger L3 cache, so in this area, it wins out over the Pentium Dual Core.

The maximum Thermal Design Power is the power in Watts that the CPU will consume in the worst case scenario. The lithography is the semiconductor manufacturing technology being used to create the CPU - the smaller this is, the more transistors that can be fit into the CPU, and the closer the connections. For both the lithography and the TDP, it is the lower the better, because a lower number means a lower amount of power is necessary to run the CPU, and consequently a lower amount of heat is produced.

The Core i7-640UM 2-Core has a 17 Watt lower Maximum TDP than the Pentium Dual Core (though they were created with the same size 32 nm manufacturing technology). What this means is the Core i7-640UM 2-Core will consume slightly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill slightly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

CPU Core Details

CPU CodenameSandy BridgeArrandale
MoBo SocketrPGA 988A / B / Socket G1 / G2rPGA 988A / B / Socket G1 / G2
Notebook CPUyesyes
Release Date15 May 201101 Apr 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs2
CPU Threads-vs4
Clock Speed2.1 GHzvs1.2 GHz
Turbo Frequency-vs2.266 GHz
Max TDP35 Wvs18 W
Lithography32 nmvs32 nm
Bit Width-vs64 Bit
Max Temperature-vs105°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs128 KB
L2 Cache Size512 KBvs512 KB
L3 Cache Size2 MBvs4 MB
Max Memory Size-vs8 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphicsno
Base GPU Frequency-vs-
Max GPU Frequency-vs-
DirectX-vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewPentium Dual Core B950 2.1GHz is an entry-level CPU part of the Pentium Dual Core Series release by Intel.
It's based on the Sandy Bridge architecture but many of the special technologies are deactivated and has 2 cores, whereas each core only has one thread.
The performance is average and enough to play Very Demanding games smoothly, at least with medium detail.
Core i7-640UM 2-Core 1.2GHz is an ultra energy efficient mobile CPU based on the 32nm, Nehalem architecture.

It offers 2 Physical Cores (4 Logical), initially clocked at 1.2GHz, which may go up to 2.266GHz and 4MB of L3 Cache.
Among its many features, HyperThreading, Turbo Boost and Virtualization are activated.

The processor integrates very weak Graphics called Intel HD i7 640UM, with 10 Execution Units, initially clocked at 166MHz and that go up to 500MHz, in Turbo Mode which share the L2 Cache and system RAM with the processor.
Both the processor and integrated graphics have a rated board TDP of 18W.

Its performance is below the average and so most demanding games will not run optimally.