PCI-E3.0 (x16) Graphics Card in PCI Express 2.0 x16 slot possible?

[jagermain]

Someone Please Help!
I really want to get a nice GPU upgrade and had my sights set on the EVGA GeForce GTX 660 Video Card
- 3GB GDDR5, PCI-Express 3.0 (x16), 1x Dual-Link DVI-D, 1x Dual-Link DVI-I, 1x DisplayPort, 1x HDMI, DirectX 11, SLI Ready, Dual-Slot, Fan (copy pasted from tigerdirect.com)
Am I going to be able to use this? Also, why is there like 8 different versions of this and each have a different price. I'm pretty lost in all this I apologize for the stupidity. What do I do? It says it has a minimum PSU wattage requirement of 450watts and my unit has 500watts.

I have an Acer Predator G3620:
Operating System: Genuine Windows® 7
Processor: 3rd generation Intel® Core™ i7-3770 processor
Graphics: Discrete card support for high-end NVIDIA® GeForce® and AMD Radeon™ graphic cards
Microsoft® DirectX® 11
I/O ports
Front:
Multi-in-1 card reader
Two USB 2.0 ports
Two USB 3.0 ports
Headphone and microphone line-out jack
Rear:
Four USB 2.0 ports
Two USB 3.0 ports featuring power-off USB charging
PS/2 keyboard and mouse ports
Three audio jacks
Ethernet (RJ-45) port
D-sub VGA port
HDMI® port
I/O expansion: PCI Express® 2.0 x16 slot
Three PCI Express® 2.0 x1 slot

 

[Intel God]

Yeah the slots are backwards compatible.

 

[jagermain]

Yeah the slots are backwards compatible.

So this GPU will work in my PC? Could you possibly tell me why there are many different units of the same model?
Here is where I am ordering from so please follow the link to tigerdirect and see for yourself. Thanks again!
http://www.tigerdirect.com/applications/SearchTools/search.asp?page=2&keywords=EVGA%20GeForce%20GTX%20660&sort=0&recs=10

 

[Intel God]

Yeah the slots are backwards compatible.

So this GPU will work in my PC? Could you possibly tell me why there are many different units of the same model?
Here is where I am ordering from so please follow the link to tigerdirect and see for yourself. Thanks again!
http://www.tigerdirect.com/applications/SearchTools/search.asp?page=2&keywords=EVGA%20GeForce%20GTX%20660&sort=0&recs=10

The 760 was released today and put a hurting on the 6 series and with you not being able to overclock the 3770 it would be fine with that psu.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130933

 

[jagermain]

Yeah the slots are backwards compatible.

So this GPU will work in my PC? Could you possibly tell me why there are many different units of the same model?
Here is where I am ordering from so please follow the link to tigerdirect and see for yourself. Thanks again!
http://www.tigerdirect.com/applications/SearchTools/search.asp?page=2&keywords=EVGA%20GeForce%20GTX%20660&sort=0&recs=10

The 760 was released today and put a hurting on the 6 series and with you not being able to overclock the 3770 it would be fine with that psu.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130933

So this is a better card? It's not even more expensive, weird. I'm a total dummy when it comes to this stuff I just want to pay for it and install it and it just work nice. What makes this better than the 660 if you dont mind me asking?

 

[Intel God]

Yeah the slots are backwards compatible.

So this GPU will work in my PC? Could you possibly tell me why there are many different units of the same model?
Here is where I am ordering from so please follow the link to tigerdirect and see for yourself. Thanks again!
http://www.tigerdirect.com/applications/SearchTools/search.asp?page=2&keywords=EVGA%20GeForce%20GTX%20660&sort=0&recs=10

The 760 was released today and put a hurting on the 6 series and with you not being able to overclock the 3770 it would be fine with that psu.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130933

So this is a better card? It's not even more expensive, weird. I'm a total dummy when it comes to this stuff I just want to pay for it and install it and it just work nice. What makes this better than the 660 if you dont mind me asking?

760 is almost 25% faster then a 660 in BF3. The 760 is the new bang for the buck card under 250 dollars

 

[jagermain]

Yeah the slots are backwards compatible.

So this GPU will work in my PC? Could you possibly tell me why there are many different units of the same model?
Here is where I am ordering from so please follow the link to tigerdirect and see for yourself. Thanks again!
http://www.tigerdirect.com/applications/SearchTools/search.asp?page=2&keywords=EVGA%20GeForce%20GTX%20660&sort=0&recs=10

The 760 was released today and put a hurting on the 6 series and with you not being able to overclock the 3770 it would be fine with that psu.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130933

So this is a better card? It's not even more expensive, weird. I'm a total dummy when it comes to this stuff I just want to pay for it and install it and it just work nice. What makes this better than the 660 if you dont mind me asking?

760 is almost 25% faster then a 660 in BF3. The 760 is the new bang for the buck card under 250 dollars

So could I even use the second one? the EVGA SC?

 

[Intel God]

Yeah the slots are backwards compatible.

So this GPU will work in my PC? Could you possibly tell me why there are many different units of the same model?
Here is where I am ordering from so please follow the link to tigerdirect and see for yourself. Thanks again!
http://www.tigerdirect.com/applications/SearchTools/search.asp?page=2&keywords=EVGA%20GeForce%20GTX%20660&sort=0&recs=10

The 760 was released today and put a hurting on the 6 series and with you not being able to overclock the 3770 it would be fine with that psu.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130933

So this is a better card? It's not even more expensive, weird. I'm a total dummy when it comes to this stuff I just want to pay for it and install it and it just work nice. What makes this better than the 660 if you dont mind me asking?

760 is almost 25% faster then a 660 in BF3. The 760 is the new bang for the buck card under 250 dollars

So could I even use the second one? the EVGA SC?

Yeah the SC would be fine

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130932

 

[Achint2000]

I am also buying a GTX 780 which was PCI-E 3.0 whereas mine is PCI-E 2.0, so there was written (In the description) That hey are compatible with 2.0 and 1.1 also. So there are many chances that it may work. If you have a lot of money, buy another PCI-E 3.0x 7 slots Motherboard. Well if you don't have that kinda money, it will work on PCI-E 1.1 as its written in the description.

 

[Andybeard1979]

Intel God you seem to know your stuff...

Could you take a look at my thread and see what you think?

http://www.tomshardware.co.uk/answers/id-1900471/100-150-budget-pci-x16-card-pci-x16-slot-p6t-deluxe-palm-motherboard.html#12037752

Cheers!
Andy

 

[Achint2000]

Intel God you seem to know your stuff...

Could you take a look at my thread and see what you think?

http://www.tomshardware.co.uk/answers/id-1900471/100-150-budget-pci-x16-card-pci-x16-slot-p6t-deluxe-palm-motherboard.html#12037752

Cheers!
Andy

Andy, you may also need a compatible CPU and Motherboard to use this PCI-E 3.0 and GDDR5 Memory. I am using Intel Core i5 2310K and unfortunately it doesn't support PCI-E 3.0 so I'm running slow. Sill I play Need For Speed Rivals and Assassin's Creed IV on 1366x768 and everything else Ultra High. PCI-E 3.0 Would be even faster, something which I've not experienced....

 

[Roger Rogers-1382392]

Yeah the slots are backwards compatible.

For the benefit of people in a similar but different scenario;

Not all PCI-e cards are backwards compatible. His will almost certainly. But some peoples comments on the subject caused me issues in the past.

Example?
I asked advice and using it, I bought a Sapphire HD7770 (1Gb) card I have tried all sorts of ways to get to work in my older motherboard on my XP rig; but they`re too new (past Ver 2.1) to work with the pre-ver 2.0 x16 motherboards (I run an Sapphire X1950 XTX fine on it; [but thats 512Mb]).

For early x16 motherboards (circa 2006), the best card would likely be something like the HD4770 (or HD4770 x2 if you have the PSU for it [ & 6 pin power req]).

Its appreciated that some things have moved on, but its not a panacea.