As this case is tiny and the PSU is only 120W I am building with aims of as much computing power as possible and as low power consumption as possible with out going to fanancial excess. (also hoping to save on the power bill)
To this end I am looking at the Haswell i5 4570T or 4690T.
Dual core, hyperthreaded
2.9GHz normal, 3.6GHz Turbo
4MB L3 Cache
iGpu HD4600, 200MHz normal, 1.15GHz Turbo
The 4690T has:
2.5GHz normal, 3.5GHz Turbo
6MB L3 Cache
iGpu HD4600, 350MHz normal, 1.2GHz Turbo
The problem I have is that I am unsure how much the turbo feature plays in the operation of the cpu so how much difference does the 400MHz normal speed difference matter when the Turbo's are only 100MHz difference?
I have the same question in regards to the iGPU; 150MHz normal difference but only 50MHz difference in Turbo?
Then there is the 2MB cache difference how much of difference can that make?
If the normal speed differences are not so important due to the very minor Turbo difference then the 4 core 4690T would probably be the better choice?
The 4 core is also more costly and hard to find so I am trying to decide if the extra cost effort and 10W Tdp increace is worth it.
Advice on these processors would be most appreciated.
The intended use of this machine is some light gaming (games that are a few years old at lease and usually in the $10-$30 in places such as JBHifi) light to medium level 3D CAD work (Solidworks), heavy browsing using multiple browsers and many tabs often with multiple streamed clips running or buffering, media watching (1080p several clips at once) and possibly a little video encoding if I were to decide to get a usb hdTV reciever dongle (its intended primarily for use in conjunction with my TV).