PDA

View Full Version : What's the difference between 6800GT and 6800ultra?


michaelj
05-05-05, 07:58 AM
What's the difference between 6800GT and 6800ultra?

wEEt
05-05-05, 08:03 AM
An Ultra is clocked higher by 50MHz each.

MUYA
05-05-05, 08:04 AM
in terms of core speed and memory (not effective)

Performance wise? not much in it from benches around the web.

boro
05-05-05, 08:30 AM
Beside the difference in core and memory speed, the ultra runs on 0.1V more, and usually comes with a dual slot cooler and 2 molex connectors (AGP). Therefore it may overclock higher.

MUYA
05-05-05, 08:37 AM
"May" being the operative word :)

911medic
05-05-05, 12:00 PM
No one's mentioned the obvious answer: "About a hundred twenty-five bucks!"

Peoples-Agent
05-05-05, 03:07 PM
lol...

A strange piece of marketing with these two cards, so much price difference and for what?
If your going to run an Ultra at stock speeds then your wasting your money, better off picking up a GT and overclocking it some, save the cash and instead use that to buy a better PSU or a broad for the night or sumfin.

:cool:

After all, benchmark record was set with two GTs in SLi.
Strange, strange nVidia marketing!

Optimummind
05-05-05, 03:13 PM
lol...
instead use that to buy a better PSU or a broad for the night or sumfin.


Do you do that? :)

Back to topic. The advantage of an Ultra over the GT seems to be that it can overclock higher than a GT. My GT is overclocked currently to 420/1100 while being fed 1.4V for all 3 modes.

On a Ultra, I've seen some people reach as high as 480mhz for the core and close to 1300mhz for the memory.

Keep in mind, however, that no GPU chip is the same even across the same product line so your OC limit will vary.

J-Mag
05-05-05, 03:21 PM
An Ultra is clocked higher by 50MHz each.

Not necessarily...

Some GTs are 350core stock, BFG is 370

Ultra's can either be 400core or 425core depending on brand...

Also the Memory timings of an Ultra are actually SLOWER than the memory timings of the GT.

J-Mag
05-05-05, 03:24 PM
A strange piece of marketing with these two cards, so much price difference and for what?
If your going to run an Ultra at stock speeds then your wasting your money, better off picking up a GT and overclocking it some, save the cash and instead use that to buy a better PSU or a broad for the night or sumfin.

After all, benchmark record was set with two GTs in SLi.
Strange, strange nVidia marketing!

Yeah but if you are gunna OC the Ultra will net you ~450-470 on air/water tops whilst GT's are maxing around 420 for most on air...

Also, don't read too much into any FutureMark scores, there was a bug reporting ULTRA's as GTs... Also, some people take their ULTRA cards and flash with a modded GT BIOS...

nas82
05-05-05, 03:41 PM
This is why i went with the Asus 6800GT 256MB. It comes with 2 power molex, like the Ultra, and it overclocks like a Ultra.

andy_nv
05-05-05, 03:48 PM
Also the Memory timings of an Ultra are actually SLOWER than the memory timings of the GT.
You mean as in CAS ? because the access time is 1.6ns for Ultras and usually 2ns for GTs.

$n][pErMan
05-05-05, 05:30 PM
My GT STOCK was 400mhz / 1100mhz. Gotta love the pre-OC. :D GT is by far the best buy. :)

Peoples-Agent
05-06-05, 12:54 AM
I have had my GT stable at 450 / 1150 timings @ 52C cooled with the Arctic cooler that came with it lol

Renzo
05-06-05, 07:48 AM
You mean as in CAS ? because the access time is 1.6ns for Ultras and usually 2ns for GTs.
Not only CAS but other timings as well. 6800GT 2ns chips running at 1100MHz could be faster than 6800ultra 1,6ns chips running at the same clocks. The difference, however, is neglible even if you can measure it with timedemos/etc benchmarks.