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Old May 1, 2010, 08:00 PM
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Default i5 660 vs 661
What are the differences between the 660 and 661 ?

They've both got the same 3.33 GHz clock speed and 4 MB L3 cache, so what warrants the $30 price increase for the 661 ? Also, does anyone know the overclocking headroom of these chips on high end air cooling? Would 5 GHz be doable with my Corsair H50?
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Old May 1, 2010, 08:14 PM
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ht? maybe
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Old May 1, 2010, 08:39 PM
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Its the IGP.

The 660 IGP clocked at 733mhz and the 661 IGP is clocked at 900MHZ.

Mac had a great review here at HWC.
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Old May 2, 2010, 06:29 AM
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Originally Posted by 5ILVgeARX View Post
Its the IGP.

The 660 IGP clocked at 733mhz and the 661 IGP is clocked at 900MHZ.

Mac had a great review here at HWC.

Agreed. There are no other differences.
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Old May 2, 2010, 07:32 PM
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Originally Posted by 5ILVgeARX View Post
Its the IGP.

The 660 IGP clocked at 733mhz and the 661 IGP is clocked at 900MHZ.

Mac had a great review here at HWC.
I see, so useless then for anyone who uses a dedicated GPU.
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Old May 3, 2010, 07:10 PM
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And it makes them great power saver for normal e-mail/htpc machine.

Make sure you read up on power usage of an 5-6ghz clarkdale dual core. Its not worth it , but that is just me.
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Old May 4, 2010, 02:57 AM
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As per my knowledge the Core i5 600 series processors are targeted at the upper segment of the mainstream market priced at 176 to 284 USD and for dual-core processor (Core i5 661) that will cost you nearly 200 USD. overall the Core i5 660/661 is a very good product with a lot of tweakability and potential.
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Old May 4, 2010, 03:04 AM
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I believe the 660 has VT (hardware virtualization) but the 661 doesn't, but that's a moot point now.
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Old May 4, 2010, 09:09 AM
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I believe the 660 has VT (hardware virtualization) but the 661 doesn't, but that's a moot point now.
All i-series CPUs have VT-x (hardware virtualization). The 660 has VT-d (directed I/O virtualization) but the 661 does not.
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Old May 4, 2010, 04:57 PM
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Potential or not, a dual core is a dual. Its ancient.
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