Hi,
I have come across a problem where i cannot play new games, i.e Hitman Blood Money, Prey, etc. The games will install but run very slowly and be very juddery and unplayable. I have a 3500 AMD, 256 Nvidia 5700 LE Gfx card, 1,500 ram, and don't understand why i'm getting this problem. Please can anyone possibly tell me what i can do to be able to play these newer games?

Thanks

Nvidia 5700 LE is your bottleneck. You are running on a 3+ year old middle of the line (for it's time) card trying to run new games that demand good graphic card preformance.

I Take it this card is an AGP so if you want a great card that you won't have to worry about upgrading again for another 3+ years then go out and get an Nvidia 7800 AGP.

AMD Athlon 64 X2 4600+ OC 2.7ghz
2GB Dual Channel DDR 3200
Nvidia 7900GT
SATA II 2x 200gig 7200rpm 16mb cache RAID-0
Gigabyte Nforce 4 SLI

You should post your power supply spec before getting a 7800gs. If your power supply has less than 20a on 12v rails, then I suggest you go for an radeon x800gto or geforce 6800 for lower power consumption or buy a new power supply with the 7800gs. As far as best AGP card goes, the gainward bliss 7800GS+ is the best out there... It's bascially a 7900GT counterpart in PCI-E...

TMP-Man

Asus P5P800-SE
P4 506 @ 4200Mhz 1.45v
Thermaltake CLP0024 w/ 1700RPM 92MM + AS5
1GB Corsair 2-3-3-5 DDR400
120GB/300GB 7200RPM HD
MSI 6600GT AGP 550/1150

"The games will install but run very slowly and be very juddery and unplayable."

One cant expect to run modern shader hunger games at 4xAA, 8xASF, 1280x1024 with anything below a Nvidia 6600gt these days.

Either lower your settings or replace the one element thats holding you back.

I definitely agree with Cobra_R, and TMP-Man. Like TMP-Man said, its very importand, if and before you upgrade to know the video card's power requirements.

Try using the System Requirements Lab, and see if your PC is good enough to run the game at its full potential.
"I have a 3500 AMD, 256 Nvidia 5700 LE Gfx card, 1,500 ram"
Everything looks fine here except the Video card. As Mr. Noob said "Either lower your settings or replace the one element thats holding you back." Trust me tht'll rlly help ya.
System Requirements Lab Link:
www.srtest.com

Pentium 4 3.2Ghz HT
ATX450Watts PSU
1GB Ocz DDR 400 PC3200
ECS 915P-A 1.1 800MhzFSB
PCI Xpress & AGP Xpress Board
ATI Radeon X1600 PRO 512MB DDR2
250GB HDD Western Dig.
MSI TV@Any

Thanks for your comments, i ended up replacing my motherboard so i could get a PCI express 7900 GT with a new 550W power supply. runs like a dream.
Cheers guys!