AGP 2x -> which ATI Radeon?

  • Thread starter Thread starter Nicksur19
  • Start date Start date
The 9600 pro is 4x-8x.
Thanx
Click to expand...

Don't trust what the specs say. My 9600 XT is supposedly 4x/8x AGP only as
well, but runs fine with 2x. In fact 2x is the setting Smartgart chose on my
system, even though I have 4x enabled in the BIOS. Strangely enough,
disabling 4x in the BIOS prevents the system from booting Windows properly.
 
There is a difference between AGP2x speed and AGPv1.0.....they don't
necessarily mean the same thing. You can set a AGPv2/3 to run at 2x speed,
but you CANNOT make it run 3.3V (which is what AGPv1.0 means, instead of
1.5V provided by AGPv2/3). Also the slot itself is slightly different (an
AGPv2 card will not fit into a AGPv1 slot, which is good because AGPv2 card
expects 1.5V and could fry if run at 3.3V).

Therefore it is very important to make sure that the card is actually AGPv1
compliant if your motherboard is AGPv1.

As I said earlier, the card specs at ATI website indicate the following:

AGPv1/2/3 compatible (3.3V, 1-2x; 1.5V 2-4x; 0.8V 8x): 9000 series, 9200
series, 9700 series
AGPv2/3 compatible (1.5V, 2-4x; 0.8V 8x ): 9600 series, 9800 series

Do note, that these are ATI specs... Other manufacturers might have
different specs.
 
There is a difference between AGP2x speed and AGPv1.0.....they don't
necessarily mean the same thing. You can set a AGPv2/3 to run at 2x speed,
but you CANNOT make it run 3.3V (which is what AGPv1.0 means, instead of
1.5V provided by AGPv2/3). Also the slot itself is slightly different (an
AGPv2 card will not fit into a AGPv1 slot, which is good because AGPv2 card
expects 1.5V and could fry if run at 3.3V).

Therefore it is very important to make sure that the card is actually AGPv1
compliant if your motherboard is AGPv1.

As I said earlier, the card specs at ATI website indicate the following:

AGPv1/2/3 compatible (3.3V, 1-2x; 1.5V 2-4x; 0.8V 8x): 9000 series, 9200
series, 9700 series
AGPv2/3 compatible (1.5V, 2-4x; 0.8V 8x ): 9600 series, 9800 series

Do note, that these are ATI specs... Other manufacturers might have
different specs.
Click to expand...

Then my mainboard apparently has AGP 1.0 and 2.0. No 3.0 since it cannot do
8x, but definately 2.0, since my 1.5V Radeon wasn't fried. Btw., I believe
it's AGP 1.0 cards that do not fit into 2.0 slots, since they don't have the
second notch, not vice versa. My previous card was a 3dfx Voodoo 5,
definately a 3.3V card. Both fit just fine.
 
Could be, not sure myself which way around it was at first. But true enough
AGPv2 (universal slot) does indeed support 3.3V aswell (having rechecked agp
specs):

AGP 1.0
Modes: 1x (266Mbps) (8 bytes per two clock cycles), 2x (533Mbps) (8 bytes
per clock cycle)
Connectors: AGP 3.3v keyed
AGP 2.0
Modes: 1x (266Mbps) (8 bytes per two clock cycles), 2x (533Mbps) (8 bytes
per clock cycle), 4x (1.07Gbps) (16 bytes per clock cycle)
Connectors: AGP 3.3v keyed, AGP 1.5v keyed, AGP UNIVERSAL (supports both
3.3v and 1.5v cards)
AGP 3.0
Modes: 1x (266Mbps) (8 bytes per two clock cycles), 2x (533Mbps) (8 bytes
per clock cycle), 4x (1.07Gbps) (16 bytes per clock cycle), 8x (2.1Gbps) (32
bytes per clock cycle)
Connectors: AGP 1.5v keyed, AGP Pro 1.5v keyed
 
Sat said:
Then my mainboard apparently has AGP 1.0 and 2.0. No 3.0 since it cannot do
8x, but definately 2.0, since my 1.5V Radeon wasn't fried. Btw., I believe
it's AGP 1.0 cards that do not fit into 2.0 slots, since they don't have the
second notch, not vice versa. My previous card was a 3dfx Voodoo 5,
definately a 3.3V card. Both fit just fine.
Click to expand...

www.ati.com/support/faq/agpchart.html
has a terrific overview of agp in general

try www.ati.com/products/radeon9200/radeon9200/specs.html
for info on the 9200

bill
 
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