Hi,

Thought I'd put up some card stats as there are many here who are covertly using these cards in their arsenal.

Firstly I'll start with my favorite budget killer the 4830. This is an amazing card and is 'still' a high ranking best bang per buck card. (No more than £45 used)

HD4830

Out of the box the card clocks in at 575/900 The Sapphire stock cooler gets me to 730/950 without mods which is a 25% gain, something not to sneezed at.

For gaming I found these clocks unstable but perfect for Milkyway.

Typical WU runtime

Stock (575/900) ~ 300 seconds
OC (730/950) ~ 240 seconds

Pros : Impressive Overclock

Cons : Temperatures and Power Consumption is relatively high

HD4770

I bought this yesterday on the premise that it would become my new budget cruncher.

Typical WU runtime

Stock (750/800) ~ 240 seconds
OC (850/800) ~ 207 seconds

Pros : There's a whirl of activity on the Xtemesystems forum with regards to this card where reference based 4770s can be crossflashed to an Asus TOP Bios enabling for Vcore increases with overclocking results in the region of 1ghz+ (33% gain). Power consumption is excellent.

Cons : Not a great out of the box overclock (13%), I was expecting to get it close to a HD4870 but it falls. Noisy reference fan, I run mine at 77%->62C, running the fan higher doesn't seem to aid cooling.

The others HD4850/HD4870

I don't have any hard and ready stats for these cards, as I don't own one. I hazard a guess that they should range from 170s for an overclocked HD4870 right down to 240s for a HD4850 at stock. Please share your results ;)

Overclocking the 4770

Looks like I'll take the plunge and see if I can crossflash the card and break through the 200s barrier. I also have a VF1000 which will partner the card nicely :) We'll see

Best Bang per Buck ?

I was hoping that the HD4770 would give me HD4870 at half the power consumption. Afraid I was wrong, so potentially the 4870 is best bang per buck as they can be picked up for the same price(used) as a 4770(new)

Thanks for reading and please post your results, or we should collate them all in a new thread for reference

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A little update on the HD4770

I decided to crossflash to the Asus TOP BIOS and applied a bump to vGPU. Overclocked straight to 935Mhz without even bating an eyelid.

70C on the stock fan at 100%. I didn't want to be greedy on the clock as I have the VF1000 heat sink fan to apply ;)

The result 1 WU churned out in 190 seconds.

I think 1ghz on this card is going to be very easy.

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The last (I think?) validated WUs from some of mine:

5850 @ 800MHz (single)
GPU time: 102.461 seconds, wall clock time: 104.417 seconds

4890 @ 950MHz (1 of 2 in CF)
GPU time: 150.716 seconds, wall clock time: 152.416 seconds

4890 @ 900MHz (1 of 2 in CF)
GPU time: 158.782 seconds, wall clock time: 160.257 seconds

4870 @ 800MHz (1 of 2 in CF)
GPU time: 180.025 seconds, wall clock time: 181.822 seconds

4850 @ 700MHz (1 of 2 in CF)
GPU time: 206.234 seconds, wall clock time: 207.998 seconds

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Thanks Brickhead that's very useful information, very nice results too.

EDIT :

OK I went to 1ghz with ease on the VF1000. Load temps 50C :) :)

WU time = 177 seconds. Think I'll stop here and stick with this as a 24/7 stable

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4870 @ 800MHz (1 of 2 in CF)
GPU time: 180.025 seconds, wall clock time: 181.822 seconds

Actually, that one is a single card. (Fingers quicker than brain, sorry.)

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