0
votes
2answers
34 views

How are CPUs so freakin fast

I am going through a book on C and it said "Write a program that counts from 1 to 300 million, printing the number only if it is a multiple of 100 million. Use a stopwatch for fun to time the ...
0
votes
1answer
42 views

Do certain laptops, say Macbooks, have significantly better hardware buses than others?

Many modern laptops do not allow one to change the memory banks, as they are welded in, especially ultrabooks and Macbooks seem to have this 'feature'. I've heard that sometimes this idea is ...
0
votes
3answers
81 views

How to give 100 percent CPU usage to a process

(windows 8.1 machine with i3) Is it possible to put a process using 100% of my CPU? I have a rather "slow poke" CPU and after a while working with an application, it gets really slow. I'm wondering ...
6
votes
1answer
1k views

What does the MHz of RAM really mean?

Countless of times I've heard and read that RAM-memory can have different speeds - denoted as MHz (e.g. 1066 MHz). However, what this frequency really is has never been explained to me and I'm having ...
2
votes
1answer
64 views

What does PCI (not PCI-E) bus speed of 66MHz really mean?

According to this article , the bus is the circuit that connects the motherboard . The faster the speed of the bus , the quicker data can be transferred . Bus speed is measured in MHz (Mega Hertz) and ...
2
votes
1answer
332 views

What is the “real-life” noticeable difference between different processors with similar architectures? [closed]

Quick background: I'm looking for a new laptop - my old one which had a Core i7 (and died after a year) didn't overwhelm me with its speed, so I figure I shouldn't get anything worse than an i7 in ...
1
vote
1answer
377 views

What's more important for a 3D CAD program, GHz or QPI? [closed]

We are getting ready to buy a Xeon-based workstation for a coworker who will be using Pro/E 3D CAD software. For the processor we need to choose between an E5-1607 (3 GHz with 0 GT/s QPI) or an ...
0
votes
1answer
109 views

How to determine number of tests performed by CPU per second?

My context is that for exam on encryption methods I need to calculate estimated time taken for brute force attack to succeed. Therefore I need make an assumption about the system used to crack the ...
0
votes
1answer
282 views

How does clock speed influence processing speed? [duplicate]

How is AMD able to market it's microprocessors mentioning clock speed as less as possible? How does clock speed influence FLOPS? Which one should I check first, when I'm a cpu or graphics card, FLOPS ...
14
votes
2answers
594 views

Why are newer generations of processors faster at the same clock speed?

How come, for example, a 2.66 GHz dual-core i5 will be faster than a 2.66 GHz Core 2 Duo (also dual-core)? Is this because of newer instructions that can process information in less clock cycles? ...
1
vote
1answer
560 views

Memory Speed dependent on CPU

Is memory performance dependent on the cpu speed, NB, HT, or bus speed? Will a faster CPU yield better memory performance (for example in windows experience index).
1
vote
3answers
356 views

High CPU usage when rendering DVD movie in Pinnacle

I'm running Windows 7 Quad Core 4100. When rendering a DVD movie in Pinnacle 16 I get a pop up message of High CPU usage. According to Task Manager it's running in the high 90 percent and has stopped ...
0
votes
1answer
192 views

Slower cpu (pstate) = slower ram performance?

I noticed that if I lower my CPU clock speed via P-states/SpeedStep, my RAM slows down. However, through CPU-Z, my HT link, which is what connects my CPU to the memory, is still running at the same ...
-2
votes
1answer
1k views

why are AMD CPU's generally slower then comparable intel CPU's, despite being clocked higher? [closed]

Generally, AMD processors are slower then comparable Intel procesors, despite being clocked higher. A friends intel i7 is clocked at 3.2GHz, my AMD phenom is clocked at 3.4GHz. Both are quad cores, ...
3
votes
2answers
338 views

How to run the CPU at something like 75%?

My notebook is too old for me to invest into a new fan (it will simply be replaced by a new one when the final heat death occurs), but when it runs on full speed I feel like sitting in front of a ...
2
votes
1answer
223 views

CPU FSB and MotherBoard FSB

I have a Intel processor (E6300 @1.86 GHZ) it's FSB is 1066 MHZ (as mentioned over here). Now If I install a new compatible motherboard having a DDR3 RAM (4GB) with 1333 MHz then will it be okay? I ...
1
vote
2answers
111 views

Which task takes most time during the average work of a CPU? [closed]

What takes most time during the average work of a computer? Is it actual calculation or maybe accessing memory, and the processor mostly is just waiting for data to come?
1
vote
0answers
289 views

Sempron 3500+ never clocking up (always at 800MHz)

According to CPUID CPU-Z and Windows Vista resource monitor the AMD Sempron 3500+ (1800MHz) in this Packard Bell Easynote SJ51 is never clocking higher than it's lowest speed. It's running at 52C so ...
1
vote
2answers
425 views

CPU speed vs Memory Speed when buying a new PC

I'm trying to buy a new (custom) PC. I'm not technically illiterate, but I haven't kept in touch with the hardware world. While using one website that helps you configure your own PC, component by ...
1
vote
1answer
495 views

How can I evaluate the processing power of a GPU relative to a CPU?

Suppose I have a program that does a lot of floating-point computations and is impractically slow on my current hardware. To reduce the runtime as much as possible, I want to figure out whether it's ...
4
votes
3answers
4k views

L2 Vs. L3 CPU cache speed and performance

In the past few years, looking at Intel CPUs, there has been a move from large size L2 cache to large size L3 cache. A lot of this is due to having more cores on the CPU and wanting to share the cache ...
0
votes
2answers
601 views

How important is processor speed for running R

I am in the process of buying a new laptop for work. I am a PhD student and use R and pyhton on a daily basis, often running large simulations. I was wondering what is most important for running R ...
2
votes
1answer
122 views

What is actually 1.73 GHz, 555MHz, FSB

I am owning a Acer Aspire laptop and its configuration are as follows: Intel Celeron M processor 430 (1.73 GHz, 533MHz FSB, 1MB L2 Cache Mobile Intel 940 GML Express chipset "14.1" WXGA wide TFT, ...
13
votes
5answers
20k views

What regulates Intel SpeedStep CPU throttling? Can I get some control of this on Windows7?

I’m trying to get a big virtual disk file compressed (using WinRar) before I go home today, but my CPU frequency keeps merrily going up and down between the nominal 2.8 GHz and a measly 800 MHz! The ...
0
votes
2answers
2k views

RAM size > L2 Cache size > L1 Cache size > Internal Registers of a CPU

I understand that the access speed of internal registers is very high compared to that of L1 Cache and L1 Cache can be accessed faster than that of L2 cache which in turn can be accessed faster than ...
5
votes
2answers
2k views

Why does System Properties display two different frequencies?

My System Properties window has the below text (also see screenshot). What does the "1.20 GHz " refer to? Hewlett-PackardHP Compaq dc7700p ConvertibleIntel(R) Core(TM)2 Duo CPU E4400 @ 2.00GHz ...
0
votes
3answers
3k views

Looking for gadget (or anything else) to find true CPU speed in Win 7

I am looking for a gadget preferably, or any program, to tell me my true CPU speed in Win 7. I have a Xeon 3426. I am running the Intel Turbo Boost monitor gadget, but it's only going down to 1.87 ...
5
votes
4answers
1k views

How does increasing the number of transistors in a chip increase its speed

Is the only purpose of transistors in a cpu to act as the switches that define its instruction set? And if so then why does increasing the number of transistors increase its speed?
3
votes
3answers
2k views

Slowing down cpu speed

How to slow down my laptop cpu so that it does not overheat?
6
votes
5answers
21k views

What is more important for speed: Processor Speed or RAM? [closed]

I am about to buy a desktop, I narrowed it down to two choices, both are virtually identical (even in terms of price) but one has 4 GB of RAM and a 3.7 GHZ CPU the other has 8GB of RAM and a 2.7 GHZ ...
2
votes
2answers
2k views

Processor not running at max speed

My laptop has an Intel Core 2 Duo T9300 which should be running at 2.5GHz, however CPU-Z consistently reports my Core speed at right under 1.6Ghz (8x multiplier and ~200MHz Bus Speed). Even when I'm ...
2
votes
2answers
773 views

Software way to cool down an old MacBook Pro

First a little background: I've got lots of computers, including Linux PCs and two MacBook Pro (and a MacMini). My concern is with my 'old' MacBookPro (Core Duo). It really does overheat. Warranty is ...
0
votes
1answer
1k views

ACPI Throttling in Ubuntu

I'm looking to throttle my cpu through the ACPI. I've read up on it, but I keep receiving permission denied statements. I have 8 available throttling states. Here are the outcomes of my atttempts: ...
4
votes
4answers
15k views

How to see if turbo boost is working on I7 860 CPU?

I just build myself a new system with a Intel I7 860 CPU. When loading it using a single threaded application like Super PI, CPU-Z shows 2.933Ghz as speed. Now I understood that the I7 goes into turbo ...
0
votes
1answer
980 views

Where can I find a chart or data comparing CPU speed to memory speed?

If you look at this, there is a chart of memory speed versus CPU speed from 1980 - 2000. I need to use a similar chart in a research paper, and I need a good set of data from a reputable source to use ...
1
vote
5answers
750 views

What service can hold CPU at lowest frequency possible when on battery load under Ubuntu?

When I'm running on battery even with "performance" frequency scaling governor, something regularly lowers CPU speed to it's lowest value. I don't really want that, my AC strip usually in another room ...
-1
votes
2answers
14k views

Relationship between RAM & processor speed

RAM is just used for temporary storage. But since this storage is in the cpu memory (RAM) it is fast. Programs can easily read/write values into it. I've noticed more the RAM less time it takes for ...
6
votes
6answers
5k views

Can I reduce the CPU speed of my MacBook when on battery?

I've got a MacBook with a Core 2 Duo CPU. I've got CoreDuoTemp installed which can show the current speed of the CPU. It appears to always show: Mini : 1.0 GHz Maxi : 2.0 GHz Current : 2.0 GHz I ...