should i buy sapphire HD7850 2gb or 7770 1gb for old rig ?

tintin_bro5

Honorable
Jan 13, 2014
9
0
10,510
Hi experts,

my current rig Specs
-->Intel Core 2 Quad Q8200 @ 2.33GHz
Yorkfield 45nm Technology

-->2.0GB Single-Channel DDR2 @ 400MHz (6-6-6-18) (though memory stick is 800mhz)

-->Intel Corporation DG41RQ (J2E1)

-->78GB SAMSUNG SAMSUNG HD080HJ (IDE)
-->488GB Western Digital WDC WD5000AAKX-001CA0 (IDE)
-->PSU 450W

now since of my budget is limited, i am planning to upgrade to these parts

corsair PSU-->650VS (650W)
memory --> 4GB ddr2 800mhz
GPU--> sapphire HD7850 (2GB)
monitor--> DELL s2240l (1920X1080)
OS--> windows 7 64 bit

now the questions

will these spec hold back 7850 graphics card or bottleneck it?

even if HD7850 works, would it be able to run all games smoothly (i.e. NO crashes)?
http://ark.intel.com/products/39683/Intel-Desktop-Board-DG41RQ this link says my mobo has PCIe x16 Gen 2.x , is this true?

and finally am i better of with HD7770? ( and same questions for HD770)

and FYI i am actually a console gamer, now moving to PC platform and my budget only allows upgrading to above specs. and i would be buying my first GPU card

regards,
nitin
 

tintin_bro5

Honorable
Jan 13, 2014
9
0
10,510
I saved a bit and went for HD7770 with old rig config. will upgrade whole system in future.

though systems and specs are quiet weak and old, still i am getting a decent performance out of the card at 1920X1080.

played tomb raider , bioshock in high to very high gfx settings (min 27 fps )

but grpahics litreally cried for NFS rivals (23 fps ) that to in low settings.

thanks to all for the help,

regards,

tintin
 

tintin_bro5

Honorable
Jan 13, 2014
9
0
10,510
forgot to post this

FYI upgarded to these

cooler master -->600w (corsair 650VS was not available)
memory --> 4GB ddr2 800mhz
GPU--> sapphire HD7770 (1GB)
monitor--> DELL s2240l (1920X1080)
OS--> windows 7 64 bit

regards
tintin