Need advice on new pc, pls

[paradamed]

Hi guys, Im planning to buy a new pc with the goal to be able to play total war games with the maximum settings, 1920x1080 resolution. I need some help deciding on some stuff. Here are the items I already decided to buy:
Recorder - SATA - DVD/CD - LG - GH22NS50

PSU Corsair 750W TX Series - CMPSU-750TX - BoxCase Antec 600 - Black/Gray - Box
MB S1155 Intel Extreme Series DP67BG - Box

Processor Intel Core i3 560 LGA1156 3,33GHz - BX80616I3560SLBY2 - Box


I still have some doubts on some items:
video:
1- VGA PCI-E NVIDIA GTX 470 1.280MB/320bits ECS - NGTX470-1280IP-F - Box
2-VGA PCI-E AMD HD 6870 1GB/256bits XFX - HD-687A-ZNFC - Box
Ram:
1-Memory DDR3 1.600MHz 4GB (2x 2GB) Corsair XMS3 - CMX4GX3M2A1600C7 - Box
2-Memoria DDR3 1.600MHz 4GB (2x 2GB) G.Skill Ripjaws - F3-12800CL7D-4GBRM - Box
HD:
1-HD 1.500GB (1,5TB) 5.400/7.200RPM SATA II - Western Digital Caviar Green - WD15EARS - 64MB - Bulk
2-HD 320GB 7.200RPM SATA II - Seagate Barracuda 7200.11 - ST3320613AS - 16MB - Bulk

Pls help me decide which video, ram and HD should I buy.

[Top-Tier-Tech]

6870

Corsair

Do you need more than 320GB of storage?

[paradamed]

6870

Corsair

Do you need more than 320GB of storage?

Actually 320 gb is fine. Im not sure if the 64Mb cache will increase gaming performance. I dont know much about hardware.

[Big Boss]

That CPU and Mobo aren't compatible. May I suggest:

CPU (Changed from an 840 to a 955)

Mobo

GPU

PSU

RAM

Case

HDD

Optical drive doesn't really matter.

[Top-Tier-Tech]

That CPU and Mobo aren't compatible.

Based on his limited and extremely different choices (GTX470 is outdated, 320gb vs 1,500gb is extreme) I assumed he was buying a prebuilt or custom. But what system builder would miss a mobo/CPU compatibility?

[Big Boss]

Based on his limited and extremely different choices (GTX470 is outdated, 320gb vs 1,500gb is extreme) I assumed he was buying a prebuilt or custom. But what system builder would miss a mobo/CPU compatibility?

I dunno man, but LGA 1155 and LGA 1156 don't match.

[paradamed]

What is your budget and where will you be buying from?

Big Boss has a good list though.

My budget would be 3000 reais (Im brazilian) something like 1500 dollars. Im buying from a nearby store so I picked some of the items in their website.

Based on his limited and extremely different choices (GTX470 is outdated, 320gb vs 1,500gb is extreme) I assumed he was buying a prebuilt or custom. But what system builder would miss a mobo/CPU compatibility?

Is the cache in HD important for games? Sorry to ask, Im kind of a newbie when it comes to hardware (and software as well )

I dunno man, but LGA 1155 and LGA 1156 don't match.

My bad guys. I was browsing the website of a nearby store and I just picked some items but I missed the socket compatibility. What about this mobo, do you guys resommend it?
MB S1156 Gigabyte GA-P55A-UD3 - Rev 2.0 - Box

I have another question. I have a genuine windows 7 home premium 64 bits OS. Can I use the same windows in my new computer or will I have to buy another one?

[Big Boss]

Is the cache in HD important for games? Sorry to ask, Im kind of a newbie when it comes to hardware (and software as well )

Cache doesn't matter that much, but the overall design does. Both of your chosen drives are less than optimal performers, and the WD Green especially should not under any circumstance be an OS hard drive.

My bad guys. I was browsing the website of a nearby store and I just picked some items but I missed the socket compatibility. What about this mobo, do you guys resommend it?
MB S1156 Gigabyte GA-P55A-UD3 - Rev 2.0 - Box

Is there any reason you want an Intel i3 chip? The Phenom II I proposed will blow the i3 560 out of the water.

[mrcrusty]

Hi guys, Im planning to buy a new pc with the goal to be able to play total war games with the maximum settings, 1920x1080 resolution. I need some help deciding on some stuff. Here are the items I already decided to buy:
Recorder - SATA - DVD/CD - LG - GH22NS50

PSU Corsair 750W TX Series - CMPSU-750TX - BoxCase Antec 600 - Black/Gray - Box
MB S1155 Intel Extreme Series DP67BG - Box

Processor Intel Core i3 560 LGA1156 3,33GHz - BX80616I3560SLBY2 - Box


I still have some doubts on some items:
video:
1- VGA PCI-E NVIDIA GTX 470 1.280MB/320bits ECS - NGTX470-1280IP-F - Box
2-VGA PCI-E AMD HD 6870 1GB/256bits XFX - HD-687A-ZNFC - Box
Ram:
1-Memory DDR3 1.600MHz 4GB (2x 2GB) Corsair XMS3 - CMX4GX3M2A1600C7 - Box
2-Memoria DDR3 1.600MHz 4GB (2x 2GB) G.Skill Ripjaws - F3-12800CL7D-4GBRM - Box
HD:
1-HD 1.500GB (1,5TB) 5.400/7.200RPM SATA II - Western Digital Caviar Green - WD15EARS - 64MB - Bulk
2-HD 320GB 7.200RPM SATA II - Seagate Barracuda 7200.11 - ST3320613AS - 16MB - Bulk

Pls help me decide which video, ram and HD should I buy.

What is your budget and where will you be buying from?

Big Boss has a good list though.