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post #31 of 38
Yea I didn't really want to do that either, since I got 922 core clock @1.087v (max you can go on afterburner) on my gtx 460 768mb. Not the highest overclock, but definitely in the top range. I flashed the bios and couldnt get more than an extra 10mhz 5 min occt stable on as high as 1.25v though.

I had both a GTX 460 768mb and 1GB model, and I sold off the 1GB because the 768mb model actually overclocks better.

Lower VRAM = (generally) higher overclock because the memory slows things down or something. But too little VRAM, and you get terrible stutter/lag in-game. Since I play on 720, 768mb of VRAM is more than enough for any modern game on ultra graphics setting (I actually tested it, I opened hw-info64 up and watched my vram usage).

Interesting to note, the 192-bit vs 256-bit memory bus differences, dont make a difference, since, ime, most games don't even use 20% of 192-bit on 720p. It did seem the 1gb was better clock for clock very very slightly in certain benchmarks though, but not enough to make up for 50+ mhz lower core clock.
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post #32 of 38
Quote:
Originally Posted by Belial View Post

Yea I didn't really want to do that either, since I got 922 core clock @1.087v (max you can go on afterburner) on my gtx 460 768mb. Not the highest overclock, but definitely in the top range. I flashed the bios and couldnt get more than an extra 10mhz 5 min occt stable on as high as 1.25v though.
I had both a GTX 460 768mb and 1GB model, and I sold off the 1GB because the 768mb model actually overclocks better.
Lower VRAM = (generally) higher overclock because the memory slows things down or something. But too little VRAM, and you get terrible stutter/lag in-game. Since I play on 720, 768mb of VRAM is more than enough for any modern game on ultra graphics setting (I actually tested it, I opened hw-info64 up and watched my vram usage).
Interesting to note, the 192-bit vs 256-bit memory bus differences, dont make a difference, since, ime, most games don't even use 20% of 192-bit on 720p. It did seem the 1gb was better clock for clock very very slightly in certain benchmarks though, but not enough to make up for 50+ mhz lower core clock.

From what I have read, VRAM usage depends on your screen resolution(I'm not 100% sure). While playing Battlefield 3(max settings) the game uses about 1500 MB of VRAM.

ONe question: When you overclock the memory using a overclocking program(Afterburner in my case), are you over clocking the bus speed? Or is the bus speed fixed and cannot be changed?

BTW I have had a MSI GTX 660ti PE with the Twin Frozr IV cooler for over two months now and it is amazing, it keeps the gpu around 60C with the fans only at ~40% speed. Hope fully it will last because I can't afford another graphics card.

Also whats the differece between all the cool frozr designs? They all look pretty similar to me.
Edited by fishymamba - 12/11/12 at 6:06pm
post #33 of 38
Quote:
Originally Posted by fishymamba View Post

Quote:
Originally Posted by Belial View Post

Yea I didn't really want to do that either, since I got 922 core clock @1.087v (max you can go on afterburner) on my gtx 460 768mb. Not the highest overclock, but definitely in the top range. I flashed the bios and couldnt get more than an extra 10mhz 5 min occt stable on as high as 1.25v though.
I had both a GTX 460 768mb and 1GB model, and I sold off the 1GB because the 768mb model actually overclocks better.
Lower VRAM = (generally) higher overclock because the memory slows things down or something. But too little VRAM, and you get terrible stutter/lag in-game. Since I play on 720, 768mb of VRAM is more than enough for any modern game on ultra graphics setting (I actually tested it, I opened hw-info64 up and watched my vram usage).
Interesting to note, the 192-bit vs 256-bit memory bus differences, dont make a difference, since, ime, most games don't even use 20% of 192-bit on 720p. It did seem the 1gb was better clock for clock very very slightly in certain benchmarks though, but not enough to make up for 50+ mhz lower core clock.

From what I have read, VRAM usage depends on your screen resolution(I'm not 100% sure). While playing Battlefield 3(max settings) the game uses about 1500 MB of VRAM.

ONe question: When you overclock the memory using a overclocking program(Afterburner in my case), are you over clocking the bus speed? Or is the bus speed fixed and cannot be changed?

BTW I have had a MSI GTX 660ti PE with the Twin Frozr IV cooler for over two months now and it is amazing, it keeps the gpu around 60C with the fans only at ~40% speed. Hope fully it will last because I can't afford another graphics card.

Also whats the differece between all the cool frozr designs? They all look pretty similar to me.

It's not just VRAM, GPU usage in general relies on your screen resolution. Your doubling your pixel count when going from 720 to 1080, so what resolution you play at is more of a factor in what GPU you need than your graphics settings or anything else. VRAM stores textures generally (texture quality settings in game, perhaps). As I said in my post, since I play on 720, I hardly need much VRAM at all.

BF3 can go up to 1.5gb but it, like most FPS, require relatively low VRM compared to games where you have a wider screen of view.

I believe bus speed can be overclocked, but that's through your motherboard, in bios, not GPU. I don't think it's recommended to overclock, or something.... i think there's resources out there about it. Then I also think HT link speeds or something has something to do with it... I'm not sure exactly, but it's not exactly common to play with nor recommended in most instances. I think your getting confused about bus width though, in which case you cannot change the bus bit width on your GPU, just like you can't change your actual onboard memory (at least, not without some solder work and a few chips of your own to transplant).

I believe the Twin Frozr designs are supposed to be the best GPU air coolers around. The difference between the different generations is simply small improvement. Or rather, it's supposed to be improved.
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post #34 of 38
Saw some pictures of the TF3 and 4, they changed the fans but the cooler heatsink looks pretty close. Wish they could just send us of the better fans. I wonder if the mounting bracket and wiring harness are the same.
post #35 of 38
Didn't even know there was a 4, but I know the 3 has a different shroud and the fans are the exact same model as the tf2, but have a different fan head. I wouldnt be surprised if the TF4 fans are exactly the same as the TF2/3 with just a different head.

Not sure on the exact differences, searching brings up a million morons asking about same model gpu with different heatsink and saying one is better than the other simply because of factory overclock, which is going to be way below max overclock anyways and well below twin frozr's capabilties...

edit: http://www.xbitlabs.com/articles/graphics/display/msi-n680gtx-lightning_4.html

Looks like the TF4 introduces new fans, but they are still power logics.

Either way, I think the Twin Frozr is kind of dissapointing - extremely high end GPU heatsink with absolutely no VRM cooling (besides fan blowing down on uncovered VRMs). For shame.
Edited by Belial - 12/12/12 at 5:49pm
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post #36 of 38
I'm going with the reference blowers from now on, these crap fans should cost about $10 to replace. My 8800 and 6800 blowers never seemed to fail.
post #37 of 38
Well most people report that they stuck their finger in where it didn't belong and broke it, not that the fan failed, and all fans will fail and die out over enough usage (ie people using compute workloads for 2 years) and need to be relubed.

A high-end GPU heatsink can be worth as much as the GPU itself, and in the case of the twin frozrs your basically buying X graphic card + high end cooler, so a comparison would be like buying a CPU but it being either bundled with stock cooling, or an NH-D14. Getting a free NH-D14 is a pretty good deal, don't you think, especially when non-reference designs often go for the exact same cost as reference, or just slightly more.

In my case, I found the GTX 460 768mb Twin Frozr II for about $50 cheaper than every other 460 that was out at the time, I bought it new for $100 2 years ago. Nowadays, 460's sell for about $70-80 used, and that's both reference and high end cooling designs, 768mb and 1gb models. Maybe with newer GPUs it makes a difference, but especially nowadays people don't care. The Twin Frozr II allows me to push above 1.25volts on my 460 without breaking a sweat temp-wise.

Although my only complaint is they have no VRM cooling. It's like putting, well a NH-D14 on a CPU when you got a 3+1 phase with no cooling at all. Since the VRM seems to reach the same or much higher temps than the CPU, it's a bit goofy, but I digress...

Anyways, I was lazy and didn't remove the heatsink or fan module from my 460, so after enough jiggling around I ended up breaking the fan pcb module off the wire solders. I tried to glue them back on, but to my shock, using modeler's glue didn't work. I don't know if it's because it's conducting the electricity so there's an electrical circuit between all 3 wires thus preventing operationg, or because it's completely insulting the circuit, preventing operation (I mean I made pretty sure that the wires were touching the solder contacts, but maybe the glue just mucked things up).

Fortunately I still have that extra twin frozr ii fan module, the one that was getting mucked up - I'm going to clean it out, lube it right with mineral oil, then cut it off by the wire, strip the wires, and attach it to my working twin frozr ii fan module wire by wire.

What a dumb mistake on my end. I was genuinely shocked when glueing the wires back onto the solder contacts didnt work.
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post #38 of 38
Quote:
Originally Posted by savage1987 View Post

my replacement (new) 6950 fans sound a little weird from the word go. Odd harmonic vibrations at the exact speed they like to run at while gaming on the stock fan profile. I'm avoiding these heatsinks in future, unless for the TFIII they stepped up to normal spec'd replaceable fans... will cross that bridge when I come to it.
By way of a follow up, this 6950 makes really bloody annoying noises now from one of its fans, particularly on a cold startup. I don't understand why anyone would make a fan you can't service.
AMD gamer
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AMD gamer
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FX-8350 Gigabyte 970A-D3P HIS Radeon HD7970 3GB 12GB Corsair Dominator GT 2000CL9 
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240GB SanDisk Extreme SSD 1TB WD Caviar Black 2TB WD Green ASUS 24x DVDRW 
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Noctua NH-D14 Windows 7 Home Premium 64bit 27" ASUS VE278H Saitek Eclipse II 
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