60 votes
Accepted

What is a PCI-Express Lane?

Many devices use more than 1 lane. For example - gaming graphics cards use 16 lanes. Some powerful gaming computers have two graphics cards - that's 32 PCIe lanes (two x16 ports). Intel i7-5820K ...
  • 2,612
25 votes

What is a PCI-Express Lane?

A PCIe 'lane' consists of 2 differential pairs of signals. One differential pair is used for sending and the other is used for receiving, which allows simultaneous bi-directional communication. Each ...
  • 1,574
21 votes
Accepted

Benefit from using 3400 MHz RAM on a CPU that's only rated for 2400 MHz RAM

Higher-frequency RAM is often via an overclocked profile (e.g. XMP) which you have to enable in the firmware settings. The only real downside is higher power consumption and a bit more heat if you ...
  • 59.5k
18 votes
Accepted

Will dual Xeons improve Android Studio build times?

So I had to find this out the hard way. In my case, with my project and hardware it did not use all the cores. I've done some basic benchmarks with different hardware I had, but take them with a grain ...
13 votes
Accepted

Are 6th-generation Intel processors slower than 4th-generation?

Both the i7-4790K and the i7-6700K have very similar profiles, both have: a base clock of 4GHz 4 Cores / 8 Threads 8MB Cache Support for SSE4.1/4.2, AVX 2.0 Instruction Set Extensions However, there ...
  • 152
13 votes

Why does a Xeon processor cost much more than a similar Core i7 part?

Different Uses and Environments Consumer-grade Core processors are designed for everyday desktop or gaming applications and are therefore optimized to operate at higher clock speeds. Most consumer ...
  • 45.1k
10 votes

Benefit from using 3400 MHz RAM on a CPU that's only rated for 2400 MHz RAM

I would add to Bob's answer that frequency of operation is not the only thing that determines memory performance. Latency is another big part of it. Latency is governed by the frequency and the ...
  • 215
9 votes

Why does a Xeon processor cost much more than a similar Core i7 part?

Most of these answers are more or less wrong. The main thing that distinguishes a Xeon processor from a desktop processor is scalability. To run a huge multiprocessor with 36, 72, or even 144 ...
8 votes

Performance-impact of Hyper-Threading

It is likely not a measurement error. In fact, this is an eternal debate on the performance of games, since they are usually designed to have the maximum amount of single-core performance. According ...
8 votes
Accepted

Is there any issue running Windows 7 on an 7th Gen. Intel CPU (Kaby Lake)?

After searching on the web for quite some time and given the fact that the comments on the question do not give any concrete issues, it looks like Microsoft Windows 7 runs fine on an 7th Gen. Intel ...
7 votes

Why is the Core i5 5300u rated better than the i7 5600u?

That is normal for 3 main reasons: the benchamrks score depends on the ram installed, whether it is in dual channel mode or not, so a core i5 with faster ram may perform faster. heat sink and cooling,...
7 votes
Accepted

How to determine version Intel Management Engine on Linux?

Right now mjg59's mei-amt-check seems to be the best answer to this problem (found on Hacker News).
  • 1,243
6 votes

How to enable hardware virtualization on Asus motherboard

For the ASUS P9X79-WS with UEFI Bios ver. 4802 x64, enable VT-D is found under: Advanced Mode\System Agent Configuration\Intel(R) VT-d, not under Advanced\CPU Configuration\Intel Virtualization ...
  • 61
5 votes

How do I activate Intel AMT on my PC? Ctrl+P doesn't do anything

Below is my experience: I use vPro all the time at work. I work on a lot of Dell OptiPlex 9020's. One time we got 4 in that did not have vPro "Enabled". We had to ship them back and get 4 that were "...
  • 66
5 votes
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Hyper-Threading (SMT) Affinity and Equality

Are both threads on a physical CPU treated equally? Yes. There is no preference in allocation of the core's execution resources to one thread or the other. (What's an "execution resource"? See the ...
5 votes
Accepted

Is my motherboard compatible with an Intel i7?

The answer is: No. The two sockets possibly used in this laptop are the 478 and 479, both of which only supported Celeron, Pentium 4, and Centrino processors from the mid-2000's. The Core line of ...
  • 39.2k
5 votes

How to determine version Intel Management Engine on Linux?

Use the official Intel tool. You can download it following this link: https://www.intel.com/content/www/us/en/support/articles/000025619/software.html extract the archive and execute the python ...
5 votes

Intel 10th Gen Core i7 stuck at 0.79Ghz and I applied a fix that works, but I don’t understand why this needs to be done?

The problem is that one of your system thermal sensors is triggering a thermal overload protection in your CPU. From the Intel CPU Datasheet 5.2.1.3.1 Bi-Directional PROCHOT# By default, the PROCHOT# ...
  • 85k
4 votes

Intel Wireless-N 7260 slow on linux

I found that switching off Bluetooth helped. It is on the same chip, but using a Bluetooth mouse and wlan makes the wlan crash every minute. Without Bluetooth it worked for a while longer. Still I ...
  • 141
4 votes
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Why is the Core i5 5300u rated better than the i7 5600u?

There are more benchmarks and the i7 does beat the i5. However, there still seems to be some weird performance benchmark scores flying out there. For example the Ars Technica review had some results ...
  • 221
4 votes
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How many PCI express lanes does a core i7 920?

In the first generation of INTEL Core i3/i5/i7 technology the CPU didn't have on-chip PCIe controller, so the question is ill-formulated. Actually, the PCIe controller is provided from the I/O Hub (...
  • 11.9k
4 votes
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Why are certain features disabled on K-Variant Intel i7 CPUs?

why would Intel disable some of these features on their more premium chip? The reason the K Series (it's formal name) family or products does not have these features, is because those features you ...
  • 39.5k
4 votes
Accepted

Can Intel microcode updates be rolled back?

The microcode update itself can always be rolled back since it is not persistent, although if that update is being made from firmware (i.e. UEFI/BIOS) you might to flash a modified firmware to do it: ...
  • 106
4 votes
Accepted

Can I use both Integrated and Discrete graphics for increased FPS?

You cannot combine their power. To do so would require a lot of management and knowledge of the strengths of each GPU and preferably game support as well. Ideally graphics processors require ...
  • 85k
4 votes
Accepted

How is the micro-op cache tagged?

Note that AMD Zen also has a uop cache, but less is known about its internals. So you're asking specifically about Intel's uop cache in Sandybridge-family. According to Agner Fog's testing (https://...
  • 5,206
4 votes

Is the Ryzen 2 7 PRO 3700U less power efficient than 8th Generation Intel® Core™ i7-8565U?

For a processor to deliver long battery life, it needs to be efficient both at idle and under various loads. It goes without saying that the processor's performance relative to the amount of power it ...
  • 45.1k
3 votes

Why is the Core i5 5300u rated better than the i7 5600u?

There is a small difference between them but i7 5600u is better because it has: Cache 4MB (vs 3MB) Processor Base Frequency 2.6 GHz (vs 2.3 GHz) Max Turbo Frequency 3.2 GHz (vs 2.7 GHz) Graphics Max ...
  • 1,316
3 votes
Accepted

Why is the i7-5960x only 3.0Ghz, while the i7-5930k is 3.5Ghz?

Why? To be sure ask Intel. They decided on this. A likely reason tough is power and heat. More cores means more power needed and more heat generated. Higher clock speed means more power needed and ...
  • 64.1k
3 votes
Accepted

What does (R) and (TM) mean in Intel brand name?

What does (R) and (TM) mean in Intel brand name? The same as when it appears in any other brand name or publication. (R) or ® stands for Registered Trademark: The registered trademark symbol (®) ...
  • 145k
3 votes
Accepted

Accidentally under-clocked the CPU, and now I don’t know how to go back

I fixed it by fixing the BCLK (base clock) value! It turns out I had changed the BCLK and while keeping the min/max CPU Cache ratios at Auto. Before the switch, my system was 4.00 GHz. After, it was 3....
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