The game plays awesome , usually 50-76(capped)fps.
I find that hard to believe, with your current specs you are more likely to be hitting the 23/76(capped) fps. Since i’ve played ET on such a system and it was hell.
You could however prove me wrong with a full demo of fueldump with 16players on it 
That’s what I get for fps, sure some maps are worse than others, but even when the fps drops to about 30-40, it’s still very smooth. One problem is that with the need for such a large swapfile, due to my low ram, the first minute or two in a map is very gittery, but after that it is very smooth, I won’t go into tweaking with an autoexec.cfg, but believe me, I don’t run with all the bells and wistles:
seta cg_atmosphericEffects “0”
seta cg_bobpitch “0”
seta cg_bobroll “0”
seta cg_bobup “0”
seta cg_bobyaw “0”
seta cg_bloodTime “0”
seta cg_brassTime “0”
seta cg_complaintPopUp “1”
seta cg_coronafardist “0”
seta cg_crosshairPulse “0”
seta cg_drawGun “0”
seta cg_gibs “0”
seta cg_marktime “0”
seta cg_runpitch “0”
seta cg_runroll “0”
seta cg_showblood “0”
seta cg_wolfparticles “0”
seta cl_allowDownload “1”
seta cl_packetdup “0”
seta com_hunkMegs “128”
seta com_soundMegs “32”
seta com_zoneMegs “32”
seta com_maxfps “76”
seta cl_maxpackets “76”
seta r_colorbits “16”
seta r_depthbits “24”
seta r_detailtextures “0”
seta r_drawSun “1”
seta r_dynamiclight “1”
seta r_fastsky “1”
seta r_gamma “1.15”
seta r_intensity “1.5”
seta r_mapOverBrightBits “1”
seta r_mode “4”
seta r_picmip “1”
seta r_texturebits “16”
seta rate “25000”
seta snaps “40”
Host your images on http://www.sxc.hu/ or http://www.villagephotos.com/
Then post links (not embedded images as that will reach max bandwidth much faster).