Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Celeron M 390 1.7GHz Pentium M 1.5GHz
Cyberpunk 2077 2151% 2180%
Assassins Creed: Valhalla 2931% 2969%
Call of Duty: Black Ops Cold War 2082% 2109%
Watch Dogs Legion 2931% 2969%
FIFA 21 2006% 2032%
Microsoft Flight Simulator 2450% 2482%
Godfall 4248% 4303%
Grand Theft Auto VI 3600% 3647%
World of Warcraft: Shadowlands 3400% 3444%
Genshin Impact 1605% 1626%

In terms of overall gaming performance, the Intel Celeron M 390 1.7GHz is marginally better than the Intel Pentium M 1.5GHz 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 Celeron M 390 was released over a year more recently than the Pentium M 1.5GHz, and so the Celeron M 390 is likely to have better levels of support, and will be more optimized for running the latest games.

Both CPUs exhibit very poor performance, so rather than upgrading from one to the other you should consider looking at more powerful CPUs. Neither of these will be able to run the latest games in any playable way.

The Celeron M 390 and the Pentium M 1.5GHz both have 1 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 Celeron M 390 and the Pentium M 1.5GHz 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 Celeron M 390 and the Pentium M 1.5GHz are from the same family of CPUs, and thus their clock speeds are directly comparable. With this in mind, it is safe to say that with a 0.2 GHz faster base clock rate, the Celeron M 390 manages to provide marginally better performance than the Pentium M 1.5GHz.

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 M 1.5GHz has a 2047 KB bigger L2 cache than the Celeron M 390, but neither of the CPUs have L3 caches, so the Pentium M 1.5GHz wins out in this area with its larger L2 cache.

The System Bus Speed is important for providing higher bandwidth, and with higher bandwidth the system has the capacity to move more data over a certain time period than it would with lower bandwidth.

The Celeron M 390 and the Pentium M 1.5GHz both have System Bus Speeds of 400 MHz, and so have the same limits when it comes to the size of the data being processed at once.

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.

Both the Celeron M 390 and the Pentium M 1.5GHz have the same TDP of 21 Watts, and were created with the same manufacturing size of 90 nm, which means they will affect your yearly electricity bill about equally.

CPU Core Details

CPU CodenameDothanDothan
MoBo SocketSocket 479Socket 479
Notebook CPUyesyes
Release Date25 Mar 200623 Jun 2004
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores1vs1
Clock Speed1.7 GHzvs1.5 GHz
Turbo Frequency-vs-
System Bus 400 MHzvs400 MHz
Max TDP21 Wvs21 W
Lithography90 nmvs90 nm
Bit Width32 Bitvs-
Voltage Range1.004V-1.292V KBvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs64 KB
L2 Cache Size1 KBvs2048 KB
L2 Cache Speed-vs-
L3 Cache Size-vs-
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 Size35mm x 35mmvs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Celeron is a family of microprocessors from Intel targeted at the low-end consumer market. CPUs in the Celeron brand have used designs from sixth- to eighth-generation CPU microarchitectures. [Please be aware that GD data is constantly refined as more information and reports are made available.]The Pentium M brand refers to a family of mobile single-core x86 microprocessors (with the modified Intel P6 microarchitecture) introduced in March 2003 (during the heyday of the Pentium 4 desktop CPUs), and forming a part of the Intel Carmel notebook platform under the then new Centrino brand. The Pentium M processors had a maximum thermal design power (TDP) of 5?27 W depending on the model, and were intended for use in laptops (thus the 'M' suffix standing for mobile). They evolved from the core of the last Pentium III?branded CPU by adding the front-side bus (FSB) interface of Pentium 4, an improved instruction decoding and issuing front end, improved branch prediction, SSE2 support, and a much larger cache. The first Pentium M?branded CPU, code-named Banias, was followed by Dothan. The Pentium M-branded processors were succeeded by the Core-branded dual-core mobile Yonah CPU with a modified microarchitecture.