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Subject: Re: AMD or Pentium4?

Author: Aaron Gordon

Date: 12:36:58 04/09/03

Go up one level in this thread


On April 09, 2003 at 12:14:37, Robert Hyatt wrote:

>On April 09, 2003 at 11:04:51, Aaron Gordon wrote:
>
>>On April 09, 2003 at 09:24:01, Charles Worthington wrote:
>>
>>>On April 09, 2003 at 00:46:15, Charles Worthington wrote:
>>>
>>>>On April 09, 2003 at 00:34:10, Pavel Blokhine wrote:
>>>>
>>>>>On April 09, 2003 at 00:17:16, Charles Worthington wrote:
>>>>>
>>>>>>On April 08, 2003 at 23:53:06, Charles Worthington wrote:
>>>>>>
>>>>>>>On April 08, 2003 at 23:41:44, Pavel Blokhine wrote:
>>>>>>>
>>>>>>>>I am looking to buy a new computer. I will be using it for many things, but
>>>>>>>>mostly for computer video games and chess online. So what computer would be
>>>>>>>>best? TheMicro Express MicroFlex 27A Powered by AMD's 2.17-GHz Athlon XP 2700+
>>>>>>>>processor and 512MB of DDR400 SDRAM, the MicroFlex 27A earned a blistering score
>>>>>>>>of 130 on PC WorldBench 4 tests, for $2254 or a Dell Dimension 8250• 3.06-GHz
>>>>>>>>Pentium 4 processor• 200GB hard drive• 18-inch LCD monitor• 128MB ATI Radeon
>>>>>>>>9700 Pro graphics• 16X DVD-ROM drive, DVD+RW/+R drive at $3158?
>>>>>>>
>>>>>>>
>>>>>>>If video games and chess are your main uses for the machine I would think the
>>>>>>>AMD would be the better choice...especially for the money....I own a dimension
>>>>>>>8250 and while it surely performs well it was hardly worth the additional cost
>>>>>>>were i to only use it for chess. But in the end it really is just a question of
>>>>>>>personal preference. If both companies offer comparable service and support then
>>>>>>>its really a toss of the coin.
>>>>>>>Charles
>>>>>>
>>>>>>
>>>>>>P.S. The decision will also depend on what you plan for the machine in the
>>>>>>future. If you want to upgrade to a faster cpu later on or overclock your
>>>>>>current one then the AMD is the only option for you. Dell boards do not support
>>>>>>overclocking and Intel is notorious for often changing the socket on their cpus.
>>>>>>So you can pretty much rule out upgrading the Dell at all without
>>>>>>some_major_expense. Speed wise you are not going to see a huge world of
>>>>>>differece between the two machines. Assuming no overclocking you will get close
>>>>>>to 1200 kNs running fritz 8 on either. The hyperthreading will give you a 10 to
>>>>>>12% boost with the intel running Deep Fritz 7 but the strength difference is
>>>>>>negligible.
>>>>>>
>>>>>>Charles
>>>>>
>>>>>
>>>>>Thanks. But how do i overclock an AMD and is it safe?
>>>>
>>>>
>>>>
>>>>
>>>>Well, I am not an expert in overclocking but for mild overclocking, where no
>>>>additional cooling is required, i think you can just bump the cpu clock speed up
>>>>in bios say 10% or so safely (my figure may be inaccuarate). You may have
>>>>configure a jumper or two on the system board as well I am not certain about the
>>>>design of these boards. Aaron Gordon would be the one to pose this question to
>>>>as he has extensive knowledge of these boards and overclocking techniques. Sorry
>>>>I couldn't be more help.
>>>>
>>>>Charles
>>>
>>>
>>>
>>>The same also applies to the dual 3.06 xeon system you emailed me the specs to
>>>as we have already discussed above. The xeon systems have decreased in price a
>>>bit though. For chess I would recommend a minimum of 1GB of RAM and 2 would be
>>>even better but like all things related to the computer it is a matter of what
>>>you can afford to sink into one. Dell's business machines are more flexible as
>>>far as upgradability than their residential machines however they still cannot
>>>be clocked up. My machine is automatically upgraded each time a newer or faster
>>>part comes out as per my contract with Dell. The day after the part is released
>>>a technician comes to install it. This contract includes motherboards, cpu's,
>>>and memory only. As far as overclocking goes there is little need to overclock a
>>>high end AMD or Xeon dual. They are both quite fast as it is and with the upper
>>>end cpu's if you try anything more than mild overclocking you will need
>>>additional cooling because these cpu's are already clocked close to the upper
>>>end of what the engineers say is the limit of the part. Taking a 2 GHZ part to
>>>2.5 GHz is much simpler than taking a 3GHz part to 3.5GHz. Like I said earlier
>>>though, these are questions best left to Aaron Gordon or one of the guys here
>>>who specialize in overclocking. Personally, with the current advances in cpu
>>>technology i think overclocking the high end parts is a bit silly when there are
>>>faster and faster cpu's coming to market constantly. Why take the risk when it
>>>isn't needed? Most overclocking is done on the lower end chips to bring them up
>>>to where the higher end chips are without putting out the expense for the high
>>>end one. I think Aaron would agree that overclocking a high end chip past it's
>>>safety margin would be unwise.
>>>
>>>Sincerely, Charles
>>
>>Overclocking a high-end chip is fine as long as you know what you're doing. Also
>>as long as you run stability tests to ensure whatever cpu you're overclocking is
>>completely stable it doesn't matter if you're overclocking an AthlonXP 3000+ or
>>a 386SX-16MHz. Stable is stable.
>
>
>_IF_ it is verified.  This is not easy.  It means you have to run a program that
>specifically
>tests "edge conditions" by running sliding 1 patterns thru every instruction, to
>see if there is
>any unexpected cross-talk at higher frequencies, etc.
>
>Just because it runs some application correctly, does _not_ mean it will run
>_all_ applications
>correctly.

With all of the tests on my box that I've done I'd be willing to put money down
that it is 100% stable. I'll put up a linux shell to that particular box and you
can try everything in your power to crash it via cpu/memory/chipset/etc
instabilities, it's just not going to happen.



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