Daniel Drummond
Joined: 07/05/06
Posts: 216
Loc: Brazil
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On-chip video impact on cpu and memory performance
#988430 - 19/05/12 09:19 PM
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Hi, does using the on-chip video on an intel i7 3770k processor has negative effects on
the cpu's performance? Does the on-chip video processes video on its own or does it use
regular processor power to work? Does it have an impact on ram memory speed or use? I
mean, can I safely use it instead of a dedicated graphics card for professional audio,
while retaining all of my processor and memory bandwidth resources?
-------------------- www.estudiodrummond.com.br
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A. AuCr
Joined: 12/02/12
Posts: 95
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Re: On-chip video impact on cpu and memory performance
[Re: Daniel Drummond]
#988605 - 21/05/12 03:45 AM
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The Sandy and Ivy Bridge processors have on-chip GPU's. These are fine for 2D graphics,
and not horrible for 3D. They work independently of the CPU (well... in conjunction with,
really).
Adding a 3rd party graphics card shouldn't meaningfully improve
performance in audio applications.
The app should scale screen refreshes
anyway, prioritizing audio. When I have my poor Core2Duo processor really cooking,
Ableton's screen refresh rate goes way down.
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Daniel Drummond
Joined: 07/05/06
Posts: 216
Loc: Brazil
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Re: On-chip video impact on cpu and memory performance
[Re: Daniel Drummond]
#991470 - 06/06/12 04:17 AM
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thanks, but that is quite a generic answer. I'd like to know as precisely as possible, if
it is as bad as an onboard graphic or if it is different. Are there any benchmarks
comparing performance of audio workstations using on-chip video versus a dedicate graphics
card???
-------------------- www.estudiodrummond.com.br
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Seccione
Joined: 24/12/11
Posts: 32
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Re: On-chip video impact on cpu and memory performance
[Re: Daniel Drummond]
#991546 - 06/06/12 03:55 PM
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Most integrated GPU's use main memory as vram, so some precious memory bandwidth is lost
for displaying image on screen.
Some integrated GPU's doesn't implement all
kinds of hardware accelerated transformation calculations, leaving those tasks to CPU.
Some of those calculations might be required to draw certain OS/application GUI graphics,
so yes, integrated GPU might cause some overhead to CPU, depending on make and model.
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robinv
Joined: 31/08/04
Posts: 615
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Re: On-chip video impact on cpu and memory performance
[Re: Daniel Drummond]
#991703 - 06/06/12 09:04 PM
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Quote Daniel Drummond:
thanks,
but that is quite a generic answer. I'd like to know as precisely as possible, if it is as
bad as an onboard graphic or if it is different. Are there any benchmarks comparing
performance of audio workstations using on-chip video versus a dedicate graphics card???
Ivy Bridge graphics
technology is pretty amazing and you'll see bugger all difference in terms of audio
performance - at least anything measurable in terms of plug-in counts or whatever - i did
some comparison testing when Sandy Bridge came out and couldn't measure a difference. It's
different to GPU's integrated on motherboards - this really works. You'll probably not
find any benchmarks because very few people do those sorts of tests in terms of audio and
there's really no need to compare the HD4000 technology to a discrete card because it just
kinda works. In some ways a discrete card is worse because it's interrupting the PCI bus
and making demands on the processor, whereas the HD4000 is built right into the thick of
things. You may lose a small amount of memory but you gain in speed, integration and
driver performance. In my opinion unless you need a specialist workstation graphics or
need really high frame rates in Crysis or have two old analogue monitors you want to
connect up then i'd recommend the internal HD4000 every time.
--------------------
PC-Music.com hints, tips & reviews
Rain Computers UK - Creative Audio PC's
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Daniel Drummond
Joined: 07/05/06
Posts: 216
Loc: Brazil
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Re: On-chip video impact on cpu and memory performance
[Re: Daniel Drummond]
#992138 - 09/06/12 08:43 PM
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Robinv, that's exactly what I needed to know, right on the spot, thanks! I heard that
those on-chip solutions even allow for multiple monitors, so I'll use just that for the
new pc I intend to build soon.
-------------------- www.estudiodrummond.com.br
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