Which one of these computers are more powerful?

Hey, need a little help here…

Neither of these are powerful at all but I'm trying to get some bang for my buck :3

Which of these are more powerful and more better suited to run Team Fortress 2?
http://store.steampowered.com/app/440/
Thanks!

COMPUTER SPECS

-Compaq Presario CQ5700F-

AMD Athlon II 170u Processor

2GB PC3-8500 DDR3 SDRAM memory(3) (1x2GB) (expandable to 8GB)

500GB [7200RPM Serial ATA] hard drive

Genuine Windows 7 Home Premium 64-bit

ATI RadeonTM HD 3000 integrated graphics

SuperMulti DVD Burner with LightScribe Technology
——————————-
-Dell Dimension C51-

AMD AthlonTM 64 X2 dual-core

Integrated NVIDIA GeForce 6150 LE graphic GPU

250GB SATA II Hard Drive spinning at 7200 RPM

Microsoft Windows Vista

16X DVD plus and minus RW Drive
Integrated 7.1 audio

Dell Motherboard featuring the NForce 430 chipset

6 USB 2.0 ports, two in front, 4 in back

Hello xadavid, Unfortunately, I don't think either will run TF2 particularly well. If I had to say which is more powerful, it will have to be the first one. You may find that you'll have to buy a discrete/dedicated graphics card to run TF2 at any reasonable rate. This is always an option open to you in the future. I hope that helps, Nahumi