jamesbaldwyn
Posts: 747
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Why Is This Processor So Cheap?!

Sun May 13, 2007 7:17 pm

This processor is a 3.4Ghz dual core and its costing £ 105, there are other's on this site for £ 150 with 2.4Ghz


There must be a catch somewhere but what is it and do I need it ?

INTEL 3.4GHZ - £ 100

http://www.dabs.com/productview.aspx...=1&cl=4294963687&InMerch=1#reviews

I am aware that its in the clearance zone but its not used.

INTEL 2.4GHZ - £ 150

http://www.ebuyer.com/UK/product/112706/rb/27658155468
 
portcolumbus
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RE: Why Is This Processor So Cheap?!

Sun May 13, 2007 7:49 pm

Core 2 Duo > Pentium D

The Core 2 Duo may have lower clock speeds, but it will still outperform the Pentium D by a mile.
 
jamesbaldwyn
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RE: Why Is This Processor So Cheap?!

Sun May 13, 2007 7:58 pm

In what ways?
The Cache ?
 
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moo
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RE: Why Is This Processor So Cheap?!

Sun May 13, 2007 8:13 pm

Quoting Jamesbaldwyn (Reply 2):
In what ways?
The Cache ?

The Pentium D is based on the (failed) netbust technology - it simply does not scale well and has a huge long pipeline (31 parts in the last netburst core verses ~10 for other processors) which makes both branch prediction and utilisation a nightmare. Thus its slower than its contemporaries, even at higher clock speeds.

Spend the extra on an AMD or a Core2Duo - but wait until end of June to buy if you are buying a Core2Duo system....
 
Klaus
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RE: Why Is This Processor So Cheap?!

Sun May 13, 2007 10:55 pm

The Pentium D is one of the least efficient and most power-hungry CPUs out there. Up-front acquisition is the only thing that's cheap about it.

As Moo already explained, it's one of the last remnants of the Pentium 4 architecture which Intel has retired by now. They only fill a niche in the channel at the lower end to keep AMD under price pressure even below the new Core 2 CPUs.

Clock frequencies are indeed deceiving here. The current Core 2 is much faster and still consumes much less power than the old Pentium 4 at the same clock speed. Cache, pipeline and execution unit layout are some of the reasons for that.

Pentium D - Wikipedia, the free encyclopedia
Intel Core 2 - Wikipedia, the free encyclopedia
 
jamesbaldwyn
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 12:15 am

Quoting Moo (Reply 3):
but wait until end of June to buy if you are buying a Core2Duo system

Why? I only have around no more than £ 170 to spend
 
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KaiGywer
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 6:32 am

Quoting Klaus (Reply 4):
The Pentium D is one of the least efficient and most power-hungry CPUs out there. Up-front acquisition is the only thing that's cheap about it.

As Moo already explained, it's one of the last remnants of the Pentium 4 architecture which Intel has retired by now. They only fill a niche in the channel at the lower end to keep AMD under price pressure even below the new Core 2 CPUs.

Clock frequencies are indeed deceiving here. The current Core 2 is much faster and still consumes much less power than the old Pentium 4 at the same clock speed. Cache, pipeline and execution unit layout are some of the reasons for that.

Pentium D - Wikipedia, the free encyclopedia
Intel Core 2 - Wikipedia, the free encyclopedia

Did I just see a post from Klaus that didn't mention either Apple or Mac? The world is coming to an end... Big grin
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, an
 
Klaus
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 7:39 am

Quoting KaiGywer (Reply 6):
Did I just see a post from Klaus that didn't mention either Apple or Mac? The world is coming to an end... 

It seems someone's got an unhealthy fixation, and it's not me.  mischievous 
 
RichPhitzwell
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 7:53 am

Quoting KaiGywer (Reply 6):
Did I just see a post from Klaus that didn't mention either Apple or Mac

Because Mac is now Intel based Big grin
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aloges
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 7:54 am

Quoting Klaus (Reply 4):
The Pentium D is one of the least efficient and most power-hungry CPUs out there.

I can definitely confirm that... unfortunately I have a PC with a Pentium 550 (single core 3.4 GHz, NetBurst) and the thing it's best at is heating my room. That CPU has a Thermal Design Power, which is the amount of heat that it produces, of 115W.  sarcastic 
Don't cry because it's over, smile because it happened.
 
RichPhitzwell
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 8:04 am

Has anybody compared the AMD equivalent yet? I have a Turion 64 x 2, and overall I'm happy with it, but I have never set up a side by side comparison.

As for Pentium 4 and D, they are incredibly slow compared to my Turion. Proving that clock speed is not everything.
Nonav.com kinda like Whiners except the lights are on and the pimps been paid
 
AC773
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 8:11 am

Quoting Aloges (Reply 9):
I can definitely confirm that... unfortunately I have a PC with a Pentium 550 (single core 3.4 GHz, NetBurst) and the thing it's best at is heating my room. That CPU has a Thermal Design Power, which is the amount of heat that it produces, of 115W.

That reminds me...

Klaus (or anybody, really) - what's the prevalence that you know of of Speedstep-like technologies in desktop processors? You know, something that throttles down the clock speed when more power isn't needed.

The reason I ask is because I run an AMD Athlon 64 X2 4600+ processor that's a special energy-efficient version. It's rated at 65w and has the aforementioned throttling technology. Is this a standard feature set on some desktop CPUs or just relegated to certain versions?

(If this post has substandard spelling or grammar, it's because I typed it on a G4 PowerBook, which has probably one of the most vague keyboards I've ever used. Grrrr!)  biggrin 
Better to be nouveau than never to have been riche at all.
 
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KaiGywer
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 10:29 pm

Dell has some good sales going again.

What can be said about the AMD Turion and Sempron?
“Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, an
 
ORFflyer
Posts: 3142
Joined: Sat Apr 09, 2005 2:42 am

RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 10:37 pm

Quoting KaiGywer (Reply 6):
The world is coming to an end...

Not yet - you're still posting....  biggrin 
 
AC773
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Joined: Wed Nov 30, 2005 6:03 am

RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 10:44 pm

Quoting KaiGywer (Reply 12):
What can be said about the AMD Turion and Sempron?

They're not bad for the money (Sempron def. beats Celeron, which is still based on NetBurst). Anecdotally, the Pentium M actually had to be based on a modified version of the Pentium III because NetBurst was so hot & thirsty.

Just a guess, but maybe the sale is partly due to AMD's Phenom debut today.
Better to be nouveau than never to have been riche at all.
 
Goldenshield
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RE: Why Is This Processor So Cheap?!

Mon May 14, 2007 11:33 pm

I bought a Dell in late December of '05 that has the original Pentium D 2.8ghz dual core. Given the graphics card I have in it (FX6600,) the only game that I've found that can NOT run very well on it is EverQuest (the designers at SOE can't seem to restrain themselves in the design and layout department. Plus, everything has just run slow in the game since they started mandating DX9.) FSX, one of the most demanding games out there, works just fine with everything turned up.

Now, that said, unless you are doing things such as: decoding the human genome, modelling quarks, and calculating a jump to light speed so you can avoid meteors, comets, and the occasional blown-up planet—you're not going to need the absolutely most power CPU on the market.

Heck, the Linux server I'm setting up right now only has a P4 Celeron 1.8 ghz processor.
Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.
 
AC773
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RE: Why Is This Processor So Cheap?!

Tue May 15, 2007 12:16 am

Quoting Goldenshield (Reply 15):

Everyone has their own definition of fast. I can also tell you that most games will run fine on systems like that; you just won't get a lot of detail that you will see with better systems. It may work well for you, but getting a Pentium 4-vintage processor has been a bad idea for quite a while now, largely because of the better, cheaper processors out there.

Quoting Goldenshield (Reply 15):
FSX, one of the most demanding games out there, works just fine with everything turned up.

With an FX6600? I'll believe in God before I believe that.
Better to be nouveau than never to have been riche at all.
 
Klaus
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RE: Why Is This Processor So Cheap?!

Tue May 15, 2007 12:27 am

Quoting AC773 (Reply 11):
Klaus (or anybody, really) - what's the prevalence that you know of of Speedstep-like technologies in desktop processors? You know, something that throttles down the clock speed when more power isn't needed.

As far as I'm aware most CPUs today use some form of this technology, to varying degrees.

But there are also significant differences in the baseline power consumption and of course in the way the opportunities are exploited by the motherboard and the operating system.

Quoting AC773 (Reply 11):
(If this post has substandard spelling or grammar, it's because I typed it on a G4 PowerBook, which has probably one of the most vague keyboards I've ever used. Grrrr!)

Your post looks fine to me. Maybe your PowerBook isn't all that dyslexic after all...!
 
Goldenshield
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Joined: Sun Jan 14, 2001 3:45 pm

RE: Why Is This Processor So Cheap?!

Tue May 15, 2007 12:33 am

Quoting AC773 (Reply 16):
With an FX6600? I'll believe in God before I believe that.

Or was it a 6800? I'll have to double check the specs when I get home. Either way, it runs smooth. Granted, it's a PCI-Ex16 card with 512 graphics RAM, complimented by 2 gigs of DDR2 on the main board.
Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.
 
AC773
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RE: Why Is This Processor So Cheap?!

Tue May 15, 2007 1:15 am

Quoting Goldenshield (Reply 18):
Or was it a 6800?

Ah, you must have the 6800 something-or-other. The FX series is 4 generations old by now, and your card is newer than that.
Better to be nouveau than never to have been riche at all.
 
Goldenshield
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RE: Why Is This Processor So Cheap?!

Tue May 15, 2007 1:25 am

Quoting AC773 (Reply 19):
Ah, you must have the 6800 something-or-other. The FX series is 4 generations old by now, and your card is newer than that.

After browing the nVidia website, I can see your confusion. I'm used to calling anything with an nVidia chipset in it as FXxxx because of their long-running (now low-end) numbering scheme.
Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.

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