Quick question about ATI HD 4670

Hi sorry to bring up a question that's probably been asked before but it’s been a while since I’ve upgraded my computer. I have an HP Pavillion m8100n with an on board garbage graphics card. I was thinking of upgrading to the Raedon 4670 HD. I want to be able to play some of the newer games (Starcraft 2, Assassins Creed 2, the newest Splitner Cell). Would 512mb be sufficient or should I go for the 1GB? Also, my computer has a 300W power supply. I believe the 4670 requires 400W minimum. What is the risk of using less power? Will the pc just shut off or is there a risk of frying something? If I do need to upgrade the power supply, is this an expensive proposition?

Thanks in advance for your help!
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  1. Hello Chrisuoft!

    First question: 512 or 1gb?

    Depends on your gaming resolution and settings. As your gaming resolution increases (1680x1050 for example, instead of 1024x768), the need for additional video memory increases. Other settings such as Anti-Aliasing and Anisotropic Filtering also use additional resources. The price difference between a card with 512 and 1gb of memory is usually negligible, so I'd recommend the 1gb just to be safe.

    Second Question:

    A card that is underpowered can cause the following problems:
    - Bad 3D performance
    - Crashing games
    - Spontaneous reset or imminent shutdown of the PC
    - Freezing during gameplay
    - PSU overload can cause it to break down

    Pretty much everyone here on the forums would tell you to upgrade your PSU to something like 400+ watts (I'd recommend 500 at least personally) to be safe.

    Upgrading your power supply is not that expensive as it used to be. You can find many different types of power supplies on sites like Newegg.com or tigerdirect.com

    Things to look for in a power supply are:

    - Continuous wattage (not peak)
    - TOTAL amperage on the 12v rail (if there's multiple rails, add them up. 30+ amps at minimum, 40-50 would be a good total)
    - Whether it's modular or not (this is more of a cosmetic option, but can slightly affect performance in extreme conditions. Modular means you don't have a ton of extra cables running around in your case because you only hook up the cables you need to the power supply)
    - The size (you want to make sure it fits in your case!)
    - Efficiency (higher efficiency power supplies waste less energy which means a nicer electricity bill at the end of the month. You'll see things like 80+ certified, which means it's 80% efficient or better. The higher percentage efficiency, the better)
    - Types and Amount of connectors (You need to be sure you'll have all the necessary connectors you'll need to hook up everything. Most common things to look for are SATA power cables and how many PCI-E 6 pin/8pin connectors there are)
    - And price!
  2. First off, the 4670 will not utilize a full 1GB as it will be too slow anyways. EG: 1GB is only useful at 1920x1080 with anti-aliasing, which the 4670 could not do anyways.

    As for the PSU, your PSU will run a 4670 just fine. As long as it has over 15a on the 12v rail.
  3. Shadow187 summarized nicely. You'll have no problems.
  4. You should also know that the 4670 512MB has a faster memory speed than the 1GB version (a cost controlling measure at the time), so the 512MB is generally a little faster. Anyway....

    You shouldn't need to upgrade the PSU for that computer. Of course, you won't know till you try and stress the card :D. Anyway, you can get a decent 500W PSU for around $50-$60 now adays, even lower if get a sale on newegg. Of course, the difference between good, decent, and absolute crap is something you may want to research :D.

    As for the video card, I say depending on your budget you may want to look at a Radeon 5670 instead which is considerably faster. Of course, you may be able to bet a 9800GT a little cheaper, it's a great buy right now, but that would certainly require you to upgrade your power supply.
  5. Thank you all very much for the quick replies. I am not looking to spend that much and the 4670 is within my budget and is probably in the upper range of what I'm looking to spend, especially given potential upgrade costs for the PSU. I will give it a try without upgrading the PSU. Hopefully I don't fry my system. So just to confirm, either the 512 or 1gb will be sufficient if I run at medium to high settings for the games I indicated above?

  6. Another 512MB is useless.
  7. Can anyone recommend a decent psu to go with this? Something that won't crap out but hopefully something less than $40?

  8. tigerdirect.com has a nice deal on an Ultra 550W PSU for $39.99 (135mm fan, 80% efficiency, a 6pin pci-e connector if you ever want to upgrade the 4670, and best of all, lifetime warranty) http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3276574&CatId=1079

    Also, the 4670 is a fine card (just make sure you get one with DDR3). I've had one for a month now and it maxes out Assassin's creed 2 with no problem.
  9. Anything less than a 4870 can't use 1 GB of memory, there will be ZERO benefit, not even at 1920x1200 with AA.
  10. The Ultra LS and LSP PSUs are all right. I wouldn't trust it like I trust my FSP Blue Storm II, but they are great for the price. The LS 500W is currently for $39.99, I guess a sale on the LSP expired


    You can save on shipping cost simply by getting it at your local store. They may even have previously returned units for cheap. I got a 500W LS unit for my backup machine that simply had the 115V/230V in the wrong position. Once I switched it the unit worked fine, and it was under $30 :D.
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