Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Celeron 1.66GHz Xeon Processor 3.0GHz
Red Dead Redemption 2 4608% 1591%
Call of Duty: Modern Warfare 3390% 1154%
Cyberpunk 2077 3900% 1337%
Zombieland: Double Tap - Road Trip 4608% 1591%
Borderlands 3 4608% 1591%
FIFA 20 3269% 1110%
Microsoft Flight Simulator 5020% 1739%
Ghost Recon Breakpoint 5100% 1768%
eFootball PES 2020 3772% 1291%
The Outer Worlds 4020% 1380%

In terms of overall gaming performance, the Intel Xeon Processor 3.0GHz is noticeably better than the Intel Celeron 1.66GHz 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 Xeon Processor 3.0GHz was released less than a year after the Celeron 1.66GHz, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The Celeron 1.66GHz and the Xeon Processor 3.0GHz 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 1.66GHz and the Xeon Processor 3.0GHz 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 1.66GHz and Xeon Processor 3.0GHz 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 Xeon Processor 3.0GHz has a 1.34 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 Xeon Processor 3.0GHz has a 1024 KB bigger L2 cache than the Celeron 1.66GHz, but neither of the CPUs have L3 caches, so the Xeon Processor 3.0GHz wins out in this area with its larger L2 cache.

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 Celeron 1.66GHz has a 83 Watt lower Maximum TDP than the Xeon Processor 3.0GHz, and was created with a 25 nm smaller manufacturing technology. What this means is the Celeron 1.66GHz will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

CPU Core Details

CPU CodenameSossamanIrwindale
MoBo SocketSocket 478/Socket NSocket 604
Notebook CPUnono
Release Date30 Nov -000114 Feb 2005
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores1vs1
Clock Speed1.66 GHzvs3 GHz
Turbo Frequency-vs-
System Bus 667 MHzvs-
Max TDP27 Wvs110 W
Lithography65 nmvs90 nm
Bit Width32 Bitvs-
Voltage Range1.1125-1.25V KBvs-
Max Temperature100°Cvs-
Virtualization Technologyyesvsno
Comparison

CPU Cache and Memory

L1 Cache Size64 KBvs16 KB
L1 Cache Count2vs-
L2 Cache Size1024 KBvs2048 KB
L2 Cache Speed-vs-
L3 Cache Size-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphics
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 brand has been used by Intel for several distinct ranges of x86 CPUs targeted at budget personal computers. Celeron processors can run all IA-32 computer programs, but their performance is somewhat lower when compared to similar CPUs with higher-priced Intel CPU brands. For example, the Celeron brand will often have less cache memory, or have advanced features purposely disabled. These missing features have had a variable impact on performance. In some cases, the effect was significant and in other cases the differences were relatively minor. Many of the Celeron designs have achieved a very high bang for the buck, while at other times, the performance difference has been noticeable. This has been the primary justification for the higher cost of other Intel CPU brands versus the Celeron range.The Xeon is a brand of multiprocessing- or multi-socket-capable x86 microprocessors from Intel Corporation targeted at the non-consumer workstation, server, and embedded system markets.

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