PNY 8800GT has been having bad frames for a while

Well I bought a Pny Geforce Nvidia 8800gt video card and At first I thought it was just great, but either I in updating the drivers or maybe it has always been like
this, I noticed that other people while playing like cod4 or codwaw on xbox live it was soooo much smoother. So I look back at mine and use fraps for fps... well
I am getting just kind of really bad fps, Even though at 1440x900 display not even 1680x 1050 and also pretty low textures and such with no aa it is like 15-24ish
fps while other people on the pc have been getting like 60ish with high settings?

These people have also had about 2-3 gbs of ram and p4 3.2ghz processors, so what is up? I am not sure when or if it changed and went wrong, or if it is just a
faulty card that still works but badly.

my system is this: using cpuz and another program and taking just some of the info, tell me what else you may need

WINDOWS XP MEDIA CENTER WITH 3.5 SPX OR WHAT EVER

-------------------------
CPU-Z version 1.49
-------------------------

Processors Map
------------------------------------------------------------------------------------

Number of processors 1
Number of threads 2

Processor 0
-- Core 0
-- Thread 0
-- Thread 1


Processors Information
------------------------------------------------------------------------------------

Processor 1 (ID = 0)
Number of cores 1 (max 1)
Number of threads 2 (max 2)
Name Intel Pentium 4 640
Codename Prescott
Specification Intel(R) Pentium(R) 4 CPU 3.20GHz
Package Socket 775 LGA (platform ID = 4h)
CPUID F.4.3
Extended CPUID F.4
Core Stepping N0
Technology 90 nm
Core Speed 3192.1 MHz (16.0 x 199.5 MHz)
Rated Bus speed 798.0 MHz
Stock frequency 3200 MHz
Instructions sets MMX, SSE, SSE2, SSE3, EM64T
L1 Data cache 16 KBytes, 8-way set associative, 64-byte line size
Trace cache 12 Kuops, 8-way set associative
L2 cache 2048 KBytes, 8-way set associative, 64-byte line size
FID/VID Control yes
FID range 14.0x - 16.0x
VID range 1.116 V - 1.420 V
Features XD


---WITH

+2.5 gbs of ram all working

+a PSU with enough volts etc, I think it is like 650W? and it is a single rail I will check soon

air flow seems alright no super high temps, or atleast not poast like about 50C sot that shouldn't matter

uhm its an Dimension e510 dell mother board but it has PCI x16 which ppl said shouldn't matter too much with the 2.0 vid card

GPU STATS

Name: NVIDIA GEFOrce 8800GT
GPU:G92
REvision: A2
Tech: 65nm
Die size 330mm^2
Bios version: 62.92.1f.00.51
Device ID: 10DE - 0611
Subvendor Pny (196E)
ROPs: 16
Buss interface PCI-E 2.0 x16 @ x16
shaders: 112 unified
DX support: 10.0/SM4.0
Pixel Fillrate: 9.6 GPixel/s
Text fillrate: 33.6Gtexel/s
GGDDR3 memory
bus width: 256bits
Memory size: 512MB
bandwidth: 57.6gb/s
driver version: nv4_disp 6.14.11.8048 (ForceWare 180.48) / XP
NOTE: for the below this is also defualt no OC atm
GPU clock: 600mhz
memory 900Mhz
shader 1500mhz
END NOTE
NVIDIA SLI disabled
fan speed is 30% 871 RPM
gpu temp is 48.8 C this is kind of random its usually about 45 -53?
PCB temp is 45.5 C

So basically I just need to know what is getting me these super low fps when I should be able to max my settings for cod at 14x9 res. and have like 50-60 fps easily?

I have thought of that but many people have been using a p4 like 2.6 or something and they have better fps than me at betting settings with actually worse comp parts however they may not have a pny it may be like a diff company.

One thing i heard about was reinstalling xp, and I am not sure I want to do this or if it will just mess things up etc. but its really odd :<

Anybody else have ideas, or know if it is cpu limited for sure?

my dads with the ati radeon 4850 computer with dual core 2.6 ghz or so works VERY well with this game

Ah sweet thanks,

Seems like all I do is replace on this computer haha, well anyway I bet a cpu would only make this computer last for another 1.5 years until another thing happens, which means that after I probably update this cpu when the next problem occurs I will just get a new computer.

1 last question: If I were to get a new cpu would it be best to just spend like 70 bucks and overcock a duo to a certain amount or spend an extra 25 and get around a 100$ chip for just a lot better performance, or whats the deal I mean the prescott motherboard or 745 or w.e doesn't seem like it would be going anywhere new in the next year so any ideas on a real nice deal nice fit off the top of ur heads?
such as this?:
http://www.newegg.com/Product/Prod [...] 6819115132

Thanks guys