Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Core i5-4590T 2.0GHz Athlon II X2 255
Cyberpunk 2077 18% 379%
Assassins Creed: Valhalla 58% 545%
Call of Duty: Black Ops Cold War 14% 364%
FIFA 21 10% 348%
Microsoft Flight Simulator 33% 443%
World of Warcraft: Shadowlands 83% 645%
Watch Dogs Legion 58% 545%
Horizon: Zero Dawn 33% 443%
Grand Theft Auto VI 93% 688%
Genshin Impact 11% 263%

In terms of overall gaming performance, the Intel Core i5-4590T 2.0GHz is massively better than the AMD Athlon II X2 255 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 Core i5-4590T 2.0GHz was released over three years more recently than the Athlon II X2, and so the Core i5-4590T 2.0GHz is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Athlon II X2 when running the latest games.

The Core i5-4590T 2.0GHz has 2 more cores than the Athlon II X2. With 4 cores, the Core i5-4590T 2.0GHz 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 i5-4590T 2.0GHz and Athlon II 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 II X2 has a 1.1 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 Core i5-4590T 2.0GHz 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 Athlon II X2 has a 1024 KB bigger L2 cache than the Core i5-4590T 2.0GHz, and although the Athlon II 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 Core i5-4590T 2.0GHz has a 30 Watt lower Maximum TDP than the Athlon II X2, and was created with a 23 nm smaller manufacturing technology. What this means is the Core i5-4590T 2.0GHz 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).

The Core i5-4590T 2.0GHz 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 Athlon II X2, 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 Intel HD Graphics 4600 Desktop, 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 CodenameHaswellRegor
MoBo SocketLGA 1150Socket AM2+ / AM3
Notebook CPUnono
Release Date14 May 201425 Jan 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs2
CPU Threads4vs-
Clock Speed2 GHzvs3.1 GHz
Turbo Frequency3 GHzvs-
Max TDP35 Wvs65 W
Lithography22 nmvs45 nm
Bit Width64 Bitvs-
Max Temperature100°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size256 KBvs256 KB
L2 Cache Size1024 KBvs2048 KB
L3 Cache Size6 MBvs-
Max Memory Size-vs-
Memory Channels-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel HD Graphics 4600 Desktopno
Base GPU Frequency400 MHzvs-
Max GPU Frequency1250 MHzvs-
DirectX11.1vs-
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 i5-4590T 2.0GHz is a super energy efficient CPU based on the 22nm, Haswell architecture.

It offers 4 Physical Cores (4 Logical), initially clocked at 2.0GHz, which may go up to 3.0GHz and 6MB of L3 Cache.
Among its many features, Turbo Boost and Virtualization are activated.

The processor integrates powerful Graphics called Intel HD Graphics 4600, with 20 Execution Units, initially clocked at 350MHz and that go up to 1150MHz, 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 65W.

Its performance is very good and sufficient for extreme gaming.
The Athlon II series is based on the AMD K10 architecture and derived from the Phenom II series. However, unlike its Phenom siblings, it does not contain any L3 Cache. There are two Athlon II dies: the dual-core Regor die with 1 MB L2 Cache per core and the four-core Propus with 512 KB per core. Regor is a native dual-core design with lower TDP and additional L2 to offset the removal of L3 cache. The three core Rana is derived from the Propus quad-core design, with one core disabled.