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3700+ 1.35V vs 3700+ 1.40V

  • CPUs
Last response: in CPUs
February 25, 2006 7:32:30 PM

I was just inputing my rig values into extreme psu calculator when I came across 2 options for my 3700+ San Diego, 1.35V & 1.40V.

CPU-Z tells me mines 1.35V, but I didn't realise there were two versions, well not of the 1MB chip (I know it comes as 512KB aswell!). What's the difference?? Or am I missing something completely?!?

More about : 3700 35v 3700 40v

February 25, 2006 7:38:04 PM

I dont think their was a 512kb L2 cache version of the 3700+, thiers an A64 mobile thats a 800mhz HT 3700+ but even it has 1MB L2 cache

and its 512KB, 512MB would be like omg the win.
February 25, 2006 7:41:42 PM

There's nothing to worry about. There are just two steppings of the 3700+. The E4 stepping has a voltage varying between 1.35V and 1.4V while the newer E6 stepping runs at 1.35V. Either way it doesn't really make much of a difference. The voltage fluctuates anyways.
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February 25, 2006 8:21:35 PM

Cool, thanks.

Also a) PCAlert tells me my cpu runs at around 55-60+*C, is this normal?
b) PC Alert tells me my +12V rail is 6.49V sometimes I see it's 5.49. This doesn't sound right at all, but my PC seem to function ok. Should I be worried??
February 25, 2006 8:28:39 PM

There are two steppings for the 3700. The original San Diego came in 1.35-1.4 vcore, E4 stepping. The new E6 stepping uses a staight 1.35 vcore. While some of the original E4 steppings could use 1.35v, not all could.
That means you may have an E4 stepping, or one of the newer E6s.
February 25, 2006 8:44:00 PM

Sounds like your sensors are being read wrong. Try downloading prime95, and running it for a couple of hours. Then tell us how high your temps get, according to pcalert.
You might want to see if you have the choice of more than one sensor for your 12v rail, and your cpu temp.
Since sensors dont get calibrated (ever) it is not all that uncommon to get one or two that read wrong.