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Before you respond, please understand, I am giving this computer to my 12 year old sibling, who is going to be ecstatic to own this outdated dinosaur, and I have no intention of spending a penny more than I have to. I already know that AGP Graphics cards are OUTDATED, OLD, INCOMPARABLE to any of the new graphics cards, such as the PCI-e or SLI. However, I am not interested in upgrading my hardware besides a few select components, such as RAM or the graphics card. I only want to know if purchasing this new video card would be an upgrade, and if-so how can I calculate how much an upgrade it would be.

So to begin, the computer statistics are:

- Motherboard: ASUS P4C800-E DELUXE
- Hard Drive - 120GB
- 2 Gig of Ram
- Intel Pentium 4 single core 3.00 Ghz (3.30Ghz overclocked)
- Nvidia Geforce 6800 GT

The new video card I'm considering is:
~ HIC ATI Radeon HD 4670 gfx card:
-1 gig of memory
-750 Core Clock
-1600 Effective Memory clock
-128-bit speed

Thank you in advance for taking the time to respond to my query.
 

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i believe that it would be a decent upgrade in graphics, wether or not it would be worth it is up to you and the price.

I would let some other people post their opinions as well first
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im not an ancient gpu guru
 

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yes, it will be a great upgrade, though this cpu will be a huge bottleneck, try to overclock it to 3.6ghz at least
 

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4670 is pretty huge upgrade from a 6800GT.
 

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lol, I still have an ancient Quadro FX 3000 lying around somewhere.
I also have this FX 1000
Some older ones include a radeon 9250 and (shoot, I forgot the name)
Whatever, it's old. Probably as old as me...give or take 5 years.
 

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As you can read in the P4 thread I have in my sig, I bought a Radeon HD4650 AGP the other day. The drivers are a bit messy, but it's doable.

It's true that both an HD3850, 4650 and 4670 are going to all be bottlenecked by the single core CPU, but there are some advantages to the HD4xxx series:

- more Vram - the HD3850 AGP only comes with 512MB. Why is this important ? You can use more Anti-aliasing on the HD4xxx series cards - and this series works better with AA too;

- less power consumption;

- better video features. Supposedly it can even do hardware acceleration of HD Flash - you're going to need it to watch HD Flash videos on Youtube. The Pentium 4, even overclocked to 3.3 is not going to be smooth all the time - I now because I have a 3 Ghz P4, and now a 3.4 Ghz one. It can play smoothly, but not while it is still loading the video - the CPU doesn't have the horsepower manage both at the same time (after it has downloaded the whole video it gets smooth).

The AGP drivers are a bit of a nightmare. The ones included on the driver CD do work, but in my case, it's Catalyst 9.6, which does not have the HD flash acceleration features. The one on Gigabyte's website also works, but it is from September 2009, which is barely newer than the one that came on the CD.

AGP hotfix drivers 11.3 give constant reboot loops to many people; you can lookup one of the last thread I wrote on the matter in the P4 thread.

You can however get the Catalyst AGP Hotfix 10.10 from Softpedia. Those work, give a performance boost in games; but at least in my case the Catalyst Control Center of this version doesn't work. You have to install the one that came with the CD, and then only install the 10.10 driver, without the CCC. So far it's been working for me. I still haven't tested if the HD flash hardware acceleration is working, but I'll do that tomorrow. If you want to be on par, also with benchmarks, you can check the P4 thread.

As to the 6800GT -> HD4670 upgrade, yes it is a big upgrade! I can actually play Crysis with a Radeon x1950 Pro with good image quality, and now with the HD4650 and the 1GB framebuffer I can set the shaders to High and use 2x AA, which improves image quality even further. Games such as Left 4 Dead also play fine (you have to set the paged pool memory to low to avoid hiccups).

In general you can get new games to work as long as you set the CPU intensive stuff to Low.

If you are using Windows XP you can consider buying a used Sound Blaster Audigy 2, 2 ZS, 4 or 4 Pro, as those have hardware acceleration for sound processing and offload that from the CPU. You can gain an additional 2 - 4 fps. Given it's a single core CPU, every help counts. If you're using Windows Vista or 7, it doesn't matter as they don't support hardware acceleration for sound processing (the CPU's nowadays are more than powerful enough to handle sound and the game calculations)

Edit: if you want, you can also upgrade the ram to 3GB, I'm assuming you now have 1+1 in Dual Channel. You can get an additional 2x512MB to go for 3GB. In games it will make a difference. It is not worth it going to 4GB, as Windows XP (or any other 32-bit OS, for that matter) will not be able to use it, as the 1GB of Vram of the graphics card has to be mapped to the main memory address space (which is 4GB for 32-bit systems), effectively giving you 3GB of usable memory. So, 3GB is the sensible and cheaper option.
 

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the Radeon HD 4650 or 4670 are the best choices for upgrade on a P4.
The cpu will just bottleneck faster cards so it would have been a waste.

If your 6800GT has 512mb ram, i wouldnt upgrade it. If it only has 256mb or less then go for an AGP 4650 or 4670
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