Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Core i7-660UM 2-Core 1.33GHz APU A8-4500M Quad-Core
Cyberpunk 2077 244% 235%
Assassins Creed: Valhalla 363% 351%
Call of Duty: Black Ops Cold War 233% 225%
Watch Dogs Legion 363% 351%
FIFA 21 221% 213%
Microsoft Flight Simulator 289% 279%
Godfall 564% 547%
Grand Theft Auto VI 465% 451%
World of Warcraft: Shadowlands 434% 421%
Genshin Impact 160% 154%

In terms of overall gaming performance, the AMD APU A8-4500M Quad-Core is marginally better than the Intel Core i7-660UM 2-Core 1.33GHz 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 APU A8-4500M Quad-Core was released less than a year after the Core i7-660UM 2-Core, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The APU A8-4500M Quad-Core has 2 more cores than the Core i7-660UM 2-Core. With 4 cores, the APU A8-4500M Quad-Core is much less likely to struggle with the latest games, or bottleneck high-end graphics cards when running them.

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 Core i7-660UM 2-Core and APU A8-4500M Quad-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 APU A8-4500M Quad-Core has a 0.57 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 enough that it possibly indicates the superiority of the APU A8-4500M Quad-Core.

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 APU A8-4500M Quad-Core has a 3584 KB bigger L2 cache than the Core i7-660UM 2-Core, and although the APU A8-4500M Quad-Core does not appear to have an L3 cache, its larger L2 cache means that it wins out in this area.

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 i7-660UM 2-Core has a 17 Watt lower Maximum TDP than the APU A8-4500M Quad-Core (though they were created with the same size 32 nm manufacturing technology). What this means is the Core i7-660UM 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).

The APU A8-4500M Quad-Core has an on-board GPU, which means that it will be capable of running basic graphics applications (i.e., games) without the need for a dedicated graphics card. The Core i7-660UM 2-Core, however, does not, and you will probably have to look for a dedicated card if you wish to use it at all.

For in-depth GPU comparisons with the Radeon HD 7640G, click on the following GPU overview comparison icon (visible throughout Game-Debate), and choose a GPU from the list to compare against:

On-board GPUs tend to be fairly awful in comparison to dedicated cards from the likes of AMD or Nvidia, but as they are built into the CPU, they also tend to be cheaper and require far less power to run (this makes them a good choice for laptops). We would recommend a dedicated card for running the latest games, but integrated GPUs are improving all the time and casual gamers may find less recent games perform perfectly acceptably.

CPU Core Details

CPU CodenameArrandaleTrinity
MoBo SocketBGA 1288Socket FS1
Notebook CPUyesyes
Release Date24 May 201015 May 2012
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs4
CPU Threads4vs-
Clock Speed1.33 GHzvs1.9 GHz
Turbo Frequency2.4 GHzvs-
Max TDP18 Wvs35 W
Lithography32 nmvs32 nm
Bit Width64 Bitvs-
Max Temperature105°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs192 KB
L2 Cache Size512 KBvs4096 KB
L3 Cache Size4 MBvs-
Max Memory Size-vs-
Memory Channels-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon HD 7640G
Base GPU Frequency-vs496 MHz
Max GPU Frequency-vs-
DirectX-vs11
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 ReviewCore i7-660UM 2-Core 1.33GHz is an ultra energy efficient mobile CPU based on the 32nm, Nehalem architecture.

It offers 2 Physical Cores (4 Logical), initially clocked at 1.33GHz, which may go up to 2.4GHz 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 660UM, 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.

It offers average performance. This means it will become a bottleneck in some demanding applications.
Fusion A8-4500M Quad Core is a 4 core fast middle-class mobile CPU based on the Trinity architecture and that features a Radeon HD 7640G GPU clocked at 497 MHz (655 MHz in Turbo mode) with 256 Pipelines.
Unfortunately, benchmarks indicate the performance falls behind all Intel i5, i7 and most i3 CPUs. Still, it should be enough to run the most demanding games at decent settings, paired with the appropriate GPU.