Which card uses more power?
Which card runs hotter?
I'm thinking of upgrading from my 4670 to a 4770 and putting my 4670's passive heatsink on it, but I don't know if the 4770 puts out too much heat for it to handle. Also, I'm curious (since the 4770 has the PCI Express power connector) if the 4770 uses more power and if so how much more.
Q's about 4770 and 4670
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The 4670 is lower idle but they are about the same on the top end, maybe the 4770 uses a little more. Most reviews show the 4770 at ~60w load.
Not sure why they decided to put a 6-pin connector on it, I wish they hadn't.
BTW, your two questions are basically the same. The heat created is just how much power has to be dissipated. The only reason one card would run hotter is because its heat sink isn't as effective.
Not sure why they decided to put a 6-pin connector on it, I wish they hadn't.
BTW, your two questions are basically the same. The heat created is just how much power has to be dissipated. The only reason one card would run hotter is because its heat sink isn't as effective.
80W is the TDP, not how much power it actually consumes.
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SPCR Review
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SPCR Review
Xbit Labs ReviewPower Consumption: By our estimates, the ATI Radeon HD 4770 requires about 28W idle and up to 60W when stressed to the limit. The idle number is 10W more than the HD 4830, while the load figure is 27W less. All things equal, we prefer lower idle power consumption as most systems, especially ones equipped with low/mid-tier graphics cards sit idle most of the time. However, xbit labs, whose video card power measurements are usually quite consistent and trustworthy, found their HD 4770 idling >10W lower than their 4830, so we are a bit puzzled at this point. We'll try more testing, perhaps with another sample, and report back on this again.
The results turned out absolutely shocking: the peak power consumption of our Radeon HD 4770 didn’t exceed 50W in 3D mode, while Radeon HD 4830 with the same core configuration but working at only 575MHz frequency consumed around 85W! Excellent unprecedented result! Moreover, Radeon HD 4770 has no real need for a separate power connector: the total load on both +12V power lines is a little over 47W, while the power part of the PCI Express x16 slot may provide up to 75W of power. In other words, even if we power the card solely through the PCIe x16 slot, there still will be more than enough reserves for serious overclocking. I am sure that ATI partners will soon roll out Radeon HD 4770 modifications like that, too.
So my question still remains, if I put my fanless cooler from my 4670 on a 4770 would it cool just as well or would the 4770 be unhappy because of the high temps? Should I get an Accelero when (if) I upgrade to a 4770 or can I just put the 4770 heatsink on the 4670, sell it, and put the 4670 heatsink onto the 4770? This is my card and the cooler...
http://www.newegg.com/Product/Product.a ... 6814102816
Think that sucker would do well on a 4770?
http://www.newegg.com/Product/Product.a ... 6814102816
Think that sucker would do well on a 4770?
It will probably do about the same on the 4770 if it fits and covers all the right bits because you would be adding fresh decent TIM. The 4770 might still be a bit warmer.
Actually, on second thought, I don't know if the mounting holes are the same on the 4670 and 4770, you'd have to check.
My biggest concern is the components would be oriented differently and you wouldn't be able to cover all of the important bits or a capacitor or something would get in the way.
Actually, on second thought, I don't know if the mounting holes are the same on the 4670 and 4770, you'd have to check.
My biggest concern is the components would be oriented differently and you wouldn't be able to cover all of the important bits or a capacitor or something would get in the way.
There were issues with review samples using very high quality components. Also, xbitlabs tests 'stress' with 3d mark 2006 afaik. Also some people say there might be some variation among the cards due to 'leakeage of the 40nm process'. My testing of my own card made me estimate more like 80 Watts (with furmark). I'd take all testing with a grain of salt and prepare for a bit more power consumption.Ch0z3n wrote:80W is the TDP, not how much power it actually consumes.
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That said I don't think that the shown heatsink will be sufficient or fit. The 4770 is longer, and the gpu is placed a bit closer to the vga connectors, so I think the heatpipes will block it. Unfortunately the s1 doesn't fit without a mod, either, but people have done it (and I'd guess you'd do it, too) - still have to do mine :p. Rather than cannibalizing your 4670, it'd might probably make sense to sell it and invest in an accelero s1 to mod - if you actually need the extra power.
On the other hand you could wait for non reference cards which might have better power consumption (like the review samples) and be passive.
Good call, I had to look at the pictures like 4 times to figure out what you were talking about. For some reason I thought the heat pipes went around the side instead of the back.Ant6n wrote:The 4770 is longer, and the gpu is placed a bit closer to the vga connectors, so I think the heatpipes will block it.
Antec Black Aluminum / Steel Fusion Remote Black Micro ATX Media Center
http://www.newegg.ca/Product/Product.as ... 6811129054
...and that s1 is getting pretty warm.
http://www.newegg.ca/Product/Product.as ... 6811129054
...and that s1 is getting pretty warm.
Nobody has them right now, if they get them in it will only be a handful of cards. The yield from TSMC's 40nm fab is really low. They shipped 40,000 RV740s for launch and have shipped very few since then. That's why there aren't any non-reference cards yet; though a few were shown at Computex.
AMD is releasing the 4730, a 4770 with an RV770LE (same as 4830) chip, because of the low yields and high demand for the 4770. IIRC is will basically be an overclocked 4830 with 128bit GDDR5.
The low yields are really hurting AMD; since the release of the 4770, both 4830 and 4850 sales have dropped, even with reduced prices. They can't really go much lower because those cards cost more to make. TSMC needs to get the yields up fast or it might even delay the launch of other 40nm cards.
AMD is releasing the 4730, a 4770 with an RV770LE (same as 4830) chip, because of the low yields and high demand for the 4770. IIRC is will basically be an overclocked 4830 with 128bit GDDR5.
The low yields are really hurting AMD; since the release of the 4770, both 4830 and 4850 sales have dropped, even with reduced prices. They can't really go much lower because those cards cost more to make. TSMC needs to get the yields up fast or it might even delay the launch of other 40nm cards.