60

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 can't handle two x16 graphics cards. For some gaming enthusiasts or some engineers, that may be a serious problem. They may have to choose different CPU (maybe ...


25

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 lane is point-to-point. That is, each lane directly attaches a single host to a single device. PCIe switches can, however, be used when a host lane needs to be ...


21

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 enable it. Compared to buying lower-frequency RAM, you're getting a guarantee that your memory will be able to overclock to those frequencies, and a built-in ...


17

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 of salt - you should understand that requirements and setups can affect outcome tremendously. Testing details So this is the hardware I had: i7 6700k (4 ...


13

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 applications cannot take advantage of more than a few processor cores and would benefit significantly more from a processor that operates at 4+ GHz than having 8 ...


13

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 are also slight differences in: the system bus architecture: DMI3 @ 8GT/S (i7-6700k) vs. DMI2 @ 5 GT/s (i7-4790k) Boostclock: 4.2 GHz (i7-6700k) vs 4.4 GHz(i7-...


10

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 timings together. Buying a high-frequency memory module, you can operate it at a lower frequency and tighten the timings to achieve better latency. (Or vice versa to ...


9

The Asus Bios Utility said VT-x was supported but I couldn't find the setting to Enable Virtualization. After an hour of head banging I noticed the scroll bars - little thin things, am sure the designer thought he was very clever.


9

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 threads, you need the Xeon chip caches to talk to each other. L1 cache must talk to all the other L1 caches, L2 cache must talk to L2 caches, etc. In an i3, i5, i7 ...


7

To enable or disable AVX instructions you can use this commands: Enable AVX: bcdedit /set xsavedisable 0 Disable AVX: bcdedit /set xsavedisable 1 Open your command prompt and type it, then hit the enter button.


7

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, those processors are usually coupled with heat sink and fans that can only dissipate heat generated by 15 watt of power, which is the required by Intel, ...


7

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 to this article from Intel article from Intel the Hyperthreading is: Hyper-Threading Technology from Intel allows one physical processor package to be ...


7

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


7

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 CPU (Kaby Lake). Tested on ASUS ROG G752VS-XB72K. i7 was running fine. The only minor issue is that Microsoft decided to stop pushing "updates" to Windows 7 ...


6

I read that i7 CPUs can't access more than 32GB of memory on some forums. That is an over-generalisation. There is no i7 CPU, there are a lot of CPUs marked as 'i7 something'. Some of them, like the original core i7 920 can only address up to 24GiB. Some can address 32GiB. Some might be able to address more. Just saying 'a i7' is like saying "I heard ...


6

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 Technology as expected. (Xeon E5-2620 v2. 2.1 GHZ supports VT-d) I had to reset this setting after a power outage. When I tried to re-start a virtual machine ...


6

The i7 series is focused at end-user computation in desktop environments where the Xeon processors are for non-consumer high performance computing, often used in servers, and are optimized for such. For example, see that the Xeon processor can handle around 1.5TB of RAM. Clock speed is not the only factor which determines what makes a processor expensive. ...


6

Adam isn't wrong, but I think he missed the biggest driver. The E7-8893 v2 is intended for octa-processor systems. Meaning they will have eight of these beasts in a single motherboard. (That's what the first "8" means in the processor number, based on the Xeon naming scheme.) Since having 8 CPUs is such a rare thing, intended for such specialized ...


5

If one were to read the installation instructions one would find: If performance issues are seen on Windows 8 it is recommended to disable Hyper-V. If one were to read anecdotes on the Internet, then one would find that HAXM and Hyper-V are mutually exclusive. Hyper-V on Windows 8 prevents the installation, execution of many other virtualization ...


5

Hyper Threading is useful if you are using your machine for software development because current development environments are optimized to take advantage of multiple threads, which speeds up the development. Visual Studio is an example of such an environment. However, when it comes to executing the program that you are actually coding, HT doesn't really ...


5

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 "Enabled". AFAIK, there is not a way to enable this feature from the end user side. One of the easier ways to know if you have vPro available in your current ...


5

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 article I linked below. But examples are things like the architectural registers (IP, SP, EAX, etc.), the "execution units" that implement specific operations ...


5

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 processors did not in any form ever work with either of these sockets. Also, this computer is around 10 years old today, and the value from upgrading it will be ...


5

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 script as root sudo python2 intel_sa00086.py NB: first, you have to be root (sudo); second, the tool is compatible with version 2 of python (python2).


4

Yes. Your overclocking failed and is making the CPU slower because it is throttling. Are you 100% sure your cooling block is properly mated to the CPU? Are you sure coolant is flowing? What's your max temperature at full load at factory clocking? (If you didn't measure that first, you are not overclocking properly.)


4

If you had two choices in processors, one with 2.7GHz @ 6M cache, and the other with 3.0GHz @ 4M cache, which do you choose? It would depend which two processors they were and what my requirements were. I believe this question is based on the common misconception that core clock speeds are a measure of CPU performance. They are not. A processor with a ...


4

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 get a few "deauthenticated" and "rekeying" messages and sometimes it recovers, sometimes I have to turn the wifi off/on in the system settings. Strange ...


4

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 where the gpu performance of the i7 was lower than a comparable i5's. He's got a request in with Lenovo to see why its occuring. Here's the article: http://...


4

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 listed are being marketed to businesses, and overclocking the primary feature of the K Series is being marketed to enthusiast. Intel positions TXT, in ...


4

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://www.agner.org/optimize/, specifically his microarch pdf), it's virtually addressed (VIVT), saving the latency / power of iTLB lookups for uop-cache hits. And ...


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