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Gaming Performance Comparison

Recommended System Requirements
Game Phenom II X4 B65 Xeon E5-2637 v2
Red Dead Redemption 2 90% 18%
Cyberpunk 2077 61% 0%
Doom Eternal 56% 3%
Call of Duty: Modern Warfare 41% 13%
Dragon Ball Z Kakarot 43% 11%
Halo: Reach 22% 51%
Microsoft Flight Simulator 106% 28%
Star Wars: Jedi - Fallen Order 109% 30%
Grand Theft Auto VI 158% 60%
Need For Speed Heat 60% 1%

In terms of overall gaming performance, the Intel Xeon E5-2637 v2 is massively better than the AMD Phenom II X4 B65 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 E5-2637 v2 was released less than a year after the Phenom II X4, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

Both CPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings (assuming they are accompanied by equivalently powerful GPUs).

The Phenom II X4 and the Xeon E5-2637 v2 both have 4 cores, which is not likely to be a limiting factor for gaming.

The Xeon E5-2637 v2 has 4 more threads than the Phenom II X4. The Phenom II X4 has one thread per physical core, whereas the Xeon E5-2637 v2 uses hyperthreading and has 2 logical threads per physical core.

Multiple threads are useful for improving the performance of multi-threaded applications. Additional cores and their accompanying thread will always be beneficial for multi-threaded applications. Hyperthreading will be beneficial for applications optimized for it, but it may slow others down. For games, the number of threads is largely irrelevant, as long as you have at least 2 cores (preferably 4), and hyperthreading can sometimes even hit performance.

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 Phenom II X4 and Xeon E5-2637 v2 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 E5-2637 v2 has a 0.1 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. 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 Phenom II X4 has a 1792 KB bigger L2 cache than the Xeon E5-2637 v2, but on the other hand, it is the Xeon E5-2637 v2 that has a 9 MB bigger L3 cache than the Phenom II X4. In this case, the L2 size is probably what counts, so the Phenom II X4 is likely superior 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 Phenom II X4 has a 35 Watt lower Maximum TDP than the Xeon E5-2637 v2. However, the Xeon E5-2637 v2 was created with a 23 nm smaller manufacturing technology. Overall, by taking both into account, the Xeon E5-2637 v2 is likely the CPU with the lower heat production and power requirements, by a small amount.

CPU Core Details

CPU CodenameDenebIvy Bridge
MoBo SocketSocket AM2+LGA 2011/Socket R
Notebook CPUnono
Release Date07 Dec 201010 Sep 2013
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs4
CPU Threads4vs8
Clock Speed3.4 GHzvs3.5 GHz
Turbo Frequency-vs3.8 GHz
Max TDP95 Wvs130 W
Lithography45 nmvs22 nm
Bit Width64 Bitvs64 Bit
Max Temperature-vs76°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size512 KBvs-
L2 Cache Size2048 KBvs256 KB
L3 Cache Size6 MBvs15 MB
Memory Channels-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 Size-vs52.5mm x 45mm
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewPhenom II X4 B65 is an unlocked Phenom II X2 565.

It should offer similar performance to a Phenom II X4 B99.
The Xeon E5-2637 v2 is a 64-bit server processor in the Xeon E5 v2 family of processors. It has four cores and 8 threads, a clock speed of 3.5GHz with turbo boost to 3.8GHz. The memory controller supports DDR3-800/1066/1333/1600/1866 and it is based on the Ivy Bridge architecture.
The Xeon E5-2637 v2 is a high performing server processor, with a very high price to match. I was released in September 2013.

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