What hacking RC5 do and what is RC5?

[Budman]

i did have a BP6 & sold it,

What bios ver are you using ?? some bios ver of the BP6 doesnt allow Halt instructions, goto http://bp6.gamesquad.net and read about it.

win2k halt instructions are messed up on the BP6 board. Run Cpuidle at idle then run your tests again.

http://www.cpuidle.de/

quote from the cpuidle site.



<< Even under Win2000 a Celeron 500 will run at 37°C with CpuIdle Pro instead of 56°C without >>




i did have the same board &amp; before i got ACPI working the cpus were working 100% at idle.

go read the bp6 site on more info.

 

[mechBgon]

Frankly, the CPUs are already running cooler than if I were holding them in my hand, so I don't think their life is being shortened. All the same, let me give the Rain thing a whirl here... stay tuned! I'll run full idle and also D.net again.

 

[mechBgon]

aaack, it &quot;does not run under NT&quot;... any other similar programs to try that will work under Win2kPro?

 

[Budman]

Rain &amp; waterfall doesnt work in win2k , you need the PRo ver

http://www.bugcomputer.com/cpuidle/cpuidlepro10.zip

the demo is good for 30 days.

 

[mechBgon]

You're right, figured it out after a couple of minutes Ok, here are the latest batch of temperatures, listing CPU1, CPU2 and motherboard sensor:

Idle without CPUidle running:
93.02.....94.24.....96.80

Idle with CPUidle running:
81.23.....80.96.....84.60

Dnet client by itself:
91.54.....93.47.....96.58

Dnet with CPUidle:
85.33.....86.23.....90.50

The temperature in my room is falling gradually, which might explain why the Idle temperatures are higher than those with the Dnet client running by itself... I don't know, just reporting what I got here. From these numbers, we can see that:

1)mechbgon needs to get a life so he has something better to do at 2AM

2)CPUidle is very effective at lowering the temperature of the CPU if it has access to the unused CPU cycles

3)With the Dnet client and CPUidle running at the same time, TaskManager showed them splitting the CPU cycles 50/50, resulting in some cooling and some cracking

4)With the Dnet client running by itself, the temperatures are about 10 degrees Farenheit higher than if we were running CPUidle and not Dnet

I suppose I could run the tests again at 400MHz. If the goal were to make the hardware last as long as possible, running CPUidle with the CPUs at 400MHz and default voltage would probably be the optimal solution. So I concede your point there, Budman... and do you concede my point about ~95F being a reasonable CPU temperature?

Edit: re-reading an earlier post from you, I see that your CPU temperature jumps from ~38C to ~50C when running RC5. Maybe your temperature rises more than mine because the client uses a special Athlon-enhanced core that gets a higher keyrate by taking advantage of the advanced Athlon instruction set... and uses more transistors in the process? Could be the answer...

 

[Mandrill]

Your temps are with specs for the processors Mech.

The real question that should be asked is, who cares if they run hotter running rc-5 than they do sitting idle?

If your processor is just idle, shouldn't you just turn your pc off then since you are just wasting electricity?

This is the same argument that one hears from antioverclocking people. Who cares if it runs hotter as long as it is within specs of the processor? Who cares if it even shortens the life expectancy of your processor from 10 years to 5 years? Are you going to be using the processor that you have today in 5 years as your main pc?

So what if your processor does die in 5 years. You'll more than likely be ableto pick up the system you currently have Budman for $50 in 5 years.

Do you play games Budman? Better not because they are pretty useless and will make your processor run as hot as it can too. Notto mention the added heat from your vid card that is dumped into your case.

So your post makes a point that it makes your cpu hotter than if it was at idle. But what kind of a point is this? If your cpu is idle, what is the point of having an 850 mgz processor? so you can check email real quick? Basically to me, your post was abit trollish in nature. I'm not going to be as abrupt as some but I would like to ask that before you hit the done button on a post, think about if it is really adding anything to the thread. Logical, thought out dissent is one thing, trollish responces are another.

 

[JonB]

My processors (dual 300a/450 from Warp Core) run at 100F hour after hour and refuse to die. Being on somewhat of a &quot;wife monitored&quot; budget, I can't upgrade till they die. (and I can't bring myself to deliberately ruin good silicon). If RC5 shortens lifespan, I wish it would hurry up.

ps, I also feel that keeping my CPU's at a very steady 100F is better than cycling them up and down. Whether it is from shutting the PC down several times per day or from having power saving features control processor speeds, thermal cycles aren't good. While a 10F swing may not seem like much, that is from ambient temperature, not from some zero reference point. In my 74F room, if my processor swings from 90F to 100F, that is in the range of a 30% thermal swing.

 

[RaySun2Be]

GC23,
Every PC cracking for Team Anandtech helps the cause, and gets us that much closer to achieving #1. There is so much more to this Team than just cracking blocks. The support (technical and otherwise) is amazing, we have LOT of fun, and there are different projects you can participate in if RC5 doesn't appeal to you. Please consider joining. I have never regretted it.

Budman,
Do you overclock your CPU? If so, why? OCing a CPU can also increase it's temperature by quite a lot. So if you say &quot;don't run RC5 because it will make your CPU run hot&quot;, then we shouldn't overclock for the same reason. I think most people in this forum overclock their CPUs, which could be potentially more damaging to a CPU over the long run than RC5. But we do it anyway.

Why are you so afraid of heat? If you are so worried about the life of the CPU, of burning it up and wearing it out, turn the dang thing off and don't use it at all. It will stay cool and last a lifetime!

Do you not drive your car on hot days or take long trips knowing that it is going to be running at hotter temperatures? Do you not run the air conditioning on long trips because it will add strain to the engine and cause it to operate hotter? Most people do, because the car was designed to withstand a variance in temperatures, even with standard cooling systems. CPUs are designed to operate in a range of temperatures too.

I've had a Cely300A OCd to 464 running RC5 24x7 for a year (not to mention a work herd, and a few other CPUs around here). It is a retail box, I'm still using the heatsink/fan combo that came with it. I did add a case fan, but that is it. Yes, the CPU runs a few degrees hotter, but still well within Intel's SPECS. So why should I worry about a few degrees? If I start having heat problems, I'll get a good aftermarket heatsink/fan, some good thermal paste and upgrade my cooling.

If my car wears out, I buy another one. If my CPU wears out, I'll buy another one.

Your rants against RC5 just don't make sense to me. Overclocking will make a CPU run hotter. So what. RC5 will make a CPU run hotter. So what. If I keep the temp well within specs, and it is working fine, who cares (besides you) if it runs a few degrees hotter?

Most of us here are the types to push our PCs to the max anyway, and we accept the consequences of doing that.

Take your PC off it's shrine and get some good use out if it.

 

[dvch]

I find Mandrill's post the best-indeed if heat is so bad turn it off; or let it ALWAYS idle with Rain et al. and do not use it.

I find it hard to beleave that a 500 Celeron idles at 50C in Win 2000; mine runs a steady 37C 24/7 in W98 as a dedicated RC5 cracker.

 

[MWalkden]

There are two parts to Budman's post. Part1 'It's just a program that will make you cpu run as hot as it can' This isn't actually true. Overclocking it at the highest voltage/FSB it will most likely do that. Makeing a statement like 'It adds some heat to your system' would be more accurate.

Part2 on the otherhand is pure opinion, '&amp; there's no hope in hell that you will win $1000 prize. Sounds pretty useless doesnt it?'
That was a dump on RC5, not the client. That's what got everyone peeved.

For the original poster, GC23, sorry this thread turned into a 'Budman' post. RC5 is something you can do with your PC that has some value, both for the objective as posted by slacker and raysun2be, and for fun. It looks like it may add some heat to your system, but if that isn't a problem for you then AnandTech would be greatfull to see you involved. If you look at some of our other posts you can see we have alot of fun.

Hope you join us!

Mike
rc5Crackheads@hotmail.com

 

[chrixvh]

I have hacking RC5 encryption 1 year today, I like.

My is Chris and My like RC5.

DStroth is friend.

 

[amok]

Hehe, how many people here have had a cpu for 5 years? I don't believe I've ever kept one over a year . I upgrade my system about once a year, and the old stuff is sold off to the highest bidder (I love e*bay when it comes to selling stuff ). What do I care if the cpu lasts 10 or 5 years? And as someone already pointed out in 5 years you will be able to pick up a dual C500 system for less than you currently pay for one cpu. I honestly don't see why any of your statements are important.

And secondly, JonB made a good point. Thermal swings are more harsh on your cpus than leaving them running at a constant higher temperature.