Intel Core i7-5820K 6-Core 3.3GHz
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Intel Xeon E5-2687W
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Gaming Performance Comparison

Recommended System Requirements
Game Core i7-5820K 6-Core 3.3GHz Xeon E5-2687W

In terms of overall gaming performance, the Intel Xeon E5-2687W is noticeably better than the Intel Core i7-5820K 6-Core 3.3GHz 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 i7-5820K 6-Core was released over a year more recently than the Xeon E5-2687W, and so the Core i7-5820K 6-Core is likely to have better levels of support, and will be more optimized for 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 Xeon E5-2687W has 2 more cores than the Core i7-5820K 6-Core. 8 cores is probably excessive if you mean to just run the latest games, as games are not yet able to harness this many cores. The cores in the Core i7-5820K 6-Core is more than enough for gaming purposes. However, if you intend on running a server with the Xeon E5-2687W, it would seem to be a decent choice.

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 i7-5820K 6-Core and Xeon E5-2687W 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 Core i7-5820K 6-Core 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 Xeon E5-2687W has a 512 KB bigger L2 cache than the Core i7-5820K 6-Core, which means that it, at worst, wins out in this area, and at best, will provide superior gaming performance and will work much better with high-end graphics cards.

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 i7-5820K 6-Core has a 10 Watt lower Maximum TDP than the Xeon E5-2687W, and was created with a 10 nm smaller manufacturing technology. What this means is the Core i7-5820K 6-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).

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CPU Core Details

CPU CodenameHaswell-ESandy Bridge-EP
MoBo SocketSocket 2011-3 / R3 / LGA2011-3LGA 2011/Socket R
Notebook CPUnono
Release Date29 Aug 201406 Mar 2012
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores6vs8
CPU Threads12vs-
Clock Speed3.3 GHzvs3.1 GHz
Turbo Frequency3.6 GHzvs-
Max TDP140 Wvs150 W
Lithography22 nmvs32 nm
Bit Width64 Bitvs-
Max Temperature67°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size768 KBvs256 KB
L2 Cache Size1536 KBvs2048 KB
L3 Cache Size15 MBvs20 MB
Max Memory Size-vs-
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

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Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewCore i7-5820K 6-Core 3.3GHz is an extreme processor based on the 22nm, Haswell architecture.

It offers 6 Physical Cores (12 Logical), initially clocked at 3.3GHz, which may go up to 3.6GHz and 15MB of L3 Cache.
Among its many features, HyperThreading, Turbo Boost and Virtualization are activated and the processor has multiplier unlocked, meaning it can be overclocked easily.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 140W.

Its performance is overall identical to Core i7-4930K and is thus exceptionally good and enough for even the most demanding applications.
Intel Xeon E5-2687W is a Server CPU part of the Xeon E5 Series released by Intel in 2012.
It's based on the Sandy Bridge architecture and the memory controller supports DDR3-800, DDR3-1066, DDR3-1333 and DDR3-1600.
It has 8 cores and each core has 2 threads, make a total of 16. Turbo Boost is also available.
The performance is astonishing and surpasses all Ivy Bridge desktop CPUs but comes at an extremely high price.

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