What makes the Cpu special the speed or i7 i5 i3???
- Thread starter charldon
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- Jun 19, 2011
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marshallbradley
Honorable
- Sep 24, 2012
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Though for gaming performance is more like i7 = i5 > i3. If you want to do stuff like video encoding i7 > i5 > i3. Depends completely on the usage scenario. Speed doesn't really come into the equation unless you're comparing an i7 to an i7 or an i3 to an i3. A slower clocked i7 will always beat a faster i3 and a so on (except in the case of laptops, where some i7s have disabled cores due to heat and are therefore actually dual core).
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jaguarskx
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- Apr 19, 2006
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What make the Core i5 and i7 great is that they are quad core CPUs. The difference between the i5 and i7 is that the i7 has Hyper Threading (HT). HT is useful for programs that can take advantage of it like video encoding and 3D rendering.
Games don't take advantage of HT (well, maybe BF3 and ARMA... maybe). In fact over the past several years benchmarks have shown that HT causes about a 2% drop in game performance when it has been activated. So... for a gaming rig, it's not worth buying an i7 vs. an i5 CPU.
Regarding clockspeed vs. # of cores. Games that can make use of more than 2 cores will likely perform better on a quad core CPU than a dual core CPU as long as the difference in clockspeed is not too large. For example, I'm pretty sure BF3 will perform better on a dual core CPU running at 3.0GHz vs a quad core CPU running at 1.5GHz. However, if the game only uses at most 2 cores and the dual core CPU is clocked higher than the quad core CPU then the game will run better on the dual core CPU.
Games don't take advantage of HT (well, maybe BF3 and ARMA... maybe). In fact over the past several years benchmarks have shown that HT causes about a 2% drop in game performance when it has been activated. So... for a gaming rig, it's not worth buying an i7 vs. an i5 CPU.
Regarding clockspeed vs. # of cores. Games that can make use of more than 2 cores will likely perform better on a quad core CPU than a dual core CPU as long as the difference in clockspeed is not too large. For example, I'm pretty sure BF3 will perform better on a dual core CPU running at 3.0GHz vs a quad core CPU running at 1.5GHz. However, if the game only uses at most 2 cores and the dual core CPU is clocked higher than the quad core CPU then the game will run better on the dual core CPU.
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