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CPU Core Details

CPU Codename Broadwell Haswell-EP
MoBo Socket Not sure LGA 2011/Socket R
Notebook CPU no no
Release Date 02 Jun 2015 01 Sep 2014
CPU Link GD Link GD Link
Approved

CPU Technical Specifications

CPU Cores 4 10
CPU Threads 8 20
Clock Speed 3.3 GHz 2 GHz
Turbo Frequency 3.8GHz -
Max TDP 65 W 75 W
Lithography 14 nm 22 nm
Bit Width - 64 Bit
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 256 KB 640 KB
L2 Cache Size 1024 KB 2560 KB
L3 Cache Size 6 MB 25 MB
Memory Types
Memory Channels 2 4
ECC Memory Support no no

CPU Graphics

Integrated Graphics no no
Base GPU Frequency - -
Max GPU Frequency - -
DirectX - -
Displays Supported - -

CPU Mini Review

Mini Review Broadwell is Intel's codename for the 14 nanometer die shrink of its Haswell microarchitecture. It is a "tick" in Intel's tick-tock principle as the next step in semiconductor fabrication. Unlike the previous tick-tock iterations, Broadwell will not completely replace the full range of CPUs from the previous microarchitecture (Haswell), as there will be no low-end desktop CPUs based on Broadwell. Xeon E5-2628L v3 is an upcoming server processor based on the 22nm, Haxwell microarchitecture.

Gaming Performance Comparison

In terms of overall gaming performance, the Intel Core I7-5775R 4-Core 3.3GHz is significantly better than the Intel Xeon E5-2628L v3 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.

Both the Core I7-5775R 4-Core 3.3GHz and the Xeon E5-2628L v3 were released at the same time, so are likely to be quite similar.

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 10 has 6 more cores than the Core I7-5775R 4-Core. 10 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 4 cores in the Core I7-5775R 4-Core is more than enough for gaming purposes. However, if you intend on running a server with the 10, it would seem to be a decent choice.

The Xeon E5-2628L v3 has 12 more threads than the Core I7-5775R 4-Core. Both the Core I7-5775R 4-Core and the Xeon E5-2628L v3 use hyperthreading. The Core I7-5775R 4-Core has 2 logical threads per physical core and the Xeon E5-2628L v3 has 2.

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 Core I7-5775R 4-Core and Xeon E5-2628L v3 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 I7-5775R 4-Core has a 1.3 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 10 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 <span class='gpu2Mention'>Xeon E5-2628L v3</span> has a 1536 KB bigger L2 cache than the <span class='gpu1Mention'>Core I7-5775R 4-Core</span>, 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.