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Gaming Performance Comparison

Recommended System Requirements
Game Celeron 877 1.4 GHz Athlon 64 X2 Dual Core TK-42
Valorant 330% 641%
Cyberpunk 2077 613% 1130%
Call of Duty Warzone 522% 973%
Grand Theft Auto VI 1118% 2002%
Assassins Creed: Valhalla 798% 1450%
Minecraft: Dungeons 613% 1130%
Doom Eternal 898% 1622%
Mount and Blade 2: Bannerlord 1030% 1850%
Microsoft Flight Simulator 627% 1155%
Maneater 613% 1130%

In terms of overall gaming performance, the Intel Celeron 877 1.4 GHz is noticeably better than the AMD Athlon 64 X2 Dual Core TK-42 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 877 1.4 was released over three years more recently than the Athlon 64 X2, and so the Celeron 877 1.4 is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Athlon 64 X2 when running the latest games.

The Celeron 877 1.4 and the Athlon 64 X2 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 Celeron 877 1.4 and the Athlon 64 X2 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 877 1.4 and Athlon 64 X2 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 Athlon 64 X2 has a 0.2 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. As such, we need to look elsewhere for more reliable comparisons.

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 Athlon 64 X2 has a 512 KB bigger L2 cache than the Celeron 877 1.4, and although the Athlon 64 X2 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 Celeron 877 1.4 has a 3 Watt lower Maximum TDP than the Athlon 64 X2, and was created with a 33 nm smaller manufacturing technology. What this means is the Celeron 877 1.4 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 BridgeTyler
MoBo SocketBGA 1023Socket S1
Notebook CPUyesyes
Release Date01 Jul 201230 Nov -0001
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs2
Clock Speed1.4 GHzvs1.6 GHz
Turbo Frequency-vs-
Max TDP17 Wvs20 W
Lithography32 nmvs65 nm
Bit Width-vs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size64 KBvs256 KB
L2 Cache Size512 KBvs1024 KB
L3 Cache Size2 MBvs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphicsnono

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 ReviewIntel Celeron 877 1.4GHz is a cheap dual-core CPU for small laptops based on the Sandy Bridge architecture but with most of its features disabled.
It features Integrated Graphics clocked at 350MHz that go up to 1000MHz in Turbo mode and the memory controller supports DDR3-1066 and DDR3-1333.
Despite its puny structure, the performance isn't as horrible as it may sound and its power consumption is extremely low.
The Athlon 64 X2 is the first dual-core desktop CPU designed by AMD. It was designed from scratch as native dual-core by using an already multi-CPU enabled Athlon 64, joining it with another functional core on one die and connect both via a shared dual-channel memory controller/north bridge and additional control logic. The initial versions are based on the E-stepping model of the Athlon 64 and, depending on the model, have either 512 or 1024 KB of L2 Cache per core. The Athlon 64 X2 is capable of decoding SSE3 instructions (except those few specific to Intel's architecture).
In June 2007, AMD released low-voltage variants of their low-end 65 nm Athlon 64 X2, named Athlon X2. The Athlon X2 processors feature reduced TDP of 45 Watts