I recently went to "can you run it" and everything is fine except my CPU speed, but i checked the reqs on steam for the CPU speed and it says 
Intel Core 2 Duo 1.8 GHz and i have a Intel Core 2 Duo P8600 @ 2.40 hgz, so what gives? Why does it show that i don't meet the minimum requirements?

Ah that would make sense i guess my best bet will be to DL the demo and see how it runs

can you run it? is messing up everyone's civ 5 specs for some reason, so you'll probably be able to run it.

I think those "can I run it" type sites are an inexact science. I'd just go by the listed minimum requirements and maybe wait for the demo like you said if you're worried.

That site is so inaccurate, Like you said best bet is to try demo first.

Those sites don't take integrated graphics into account properly either

Just tested my own system to check for myself...This was the result: 
 

	CPU Minimum:  Intel Core 2 Duo 1.8 GHz or AMD Athlon X2 64 2.0 GHz You Have:  Intel(R) Core(TM)2 Duo CPU E6850 @ 3.00GHz		PASS
	CPU Speed Minimum:  Intel Core 2 Duo 1.8 GHz or AMD Athlon X2 64 2.0 GHz You Have:  3.00 GHz		Upgrade Suggested: Unfortunately, your CPU Speed does not meet this requirement. Click here to see some recommendations.

" Just tested my own system to check for myself...This was the result: 
 

	CPU Minimum:  Intel Core 2 Duo 1.8 GHz or AMD Athlon X2 64 2.0 GHz You Have:  Intel(R) Core(TM)2 Duo CPU E6850 @ 3.00GHz		PASS
	CPU Speed Minimum:  Intel Core 2 Duo 1.8 GHz or AMD Athlon X2 64 2.0 GHz You Have:  3.00 GHz		Upgrade Suggested: Unfortunately, your CPU Speed does not meet this requirement. Click here to see some recommendations.

    ...I don't really get it. :p "

Recommended:

• OS: Windows® Vista SP2/ Windows® 7
• Processor: 1.8 GHz Quad Core CPU
• Memory: 4 GB RAM
• Graphics: 512 MB ATI 4800 series or better, 512 MB nVidia 9800 series or better
• DirectX®: DirectX® version 11
• Hard Drive: 8 GB Free
• Sound: DirectX 9.0c-compatible sound card  
  
  
• So OP probably got mixed up with the fact that he has a 1.8ghz dual core where infact it lists a 1.8ghz quad.

Woah. I was tempted to buy this game, since I heard it's a much more streamlined experience than previous Civs (wich I liked, but never been able to get into). But with those recommended requirements, I think I'll wait. 
 
PS: BTW, why do they recommend DirectX 11 if neither 9800GTs nor ATi 4800s support it?

Hopefully when they mean recommended Quad core; they actually mean that they've optimized the game for quad core. Too many games actually perform better in dual than quad.

Im curious how my E8500 will work on this, im running a gtx280 and 4 gigs of ram with it but as you said its more cpu intensive.

i have a core i7 processor and it tells me i cant run it, i am on a laptop but im sure any core i7 will be quick enough to run it

System Requirements Lab is always wonky and very unreliable.  
 
Check out yougamers for a much more reliable analysis

" can you run it? is messing up everyone's civ 5 specs for some reason, so you'll probably be able to run it. "