Some Intel Arc A770 Limited Edition GPUs may show up with lower memory clock

Published: 24th Oct 2022, 07:33 GMT   Comments

Intel Arc A770 with lower memory speed

Multiple users report that their A770 LE GPUs are not showing up with advertised 17.5 Gbps.

Intel announced two Arc A770 models featuring either 16GB or 8GB memory. What is important to note is that the Limited Edition from Intel only comes with 16GB memory. The company decided that all A770 cards with 16GB should have a higher memory clock speed than 8GB models, which in this case means 17.5 Gbps instead of 16 Gbps.

As it turns out, multiple users now report that their 16GB Limited Edition cards are actually running at 16 Gbps memory. What this means is that instead of 560 GB/s bandwidth, their cards are ‘limited’ to 512 GB/s, which the same speed as A770 8GB or A750 SKUs.

Those users have now reported this issue to Intel via Github, where at least a few instances were already posted. We can clearly see that the memory speed is 2000 MHz instead of 2187 MHz:

Intel Arc A770 16GB with 17.5 Gbps memory, Source: TechPowerUP/Github

The memory speed and bandwidth are higher. This problem is reportedly not limited to GPU-Z but other software as well. Furthermore, both cards are using the same BIOS.  We have reported this issue to GPU-Z developer, who is now looking into this issue as we speak.

In any case, this issue has not been well documented yet, so if you are facing similar issues with this model specifically, we encourage you to check the clock speed in multiple apps. It also won’t hurt to report this issue through the Github as well.

Just be aware that this could be as simple bug in Intel API/drivers reporting wrong clocks. We will update this post should a solution be found quickly.

Intel Desktop ARC Alchemist Series Specifications
VideoCardz.comArc A770 16GBArc A770 8GBArc A750Arc A580Arc A380Arc A310
GPUACM-G10ACM-G10ACM-G10ACM-G10ACM-G11ACM-G11
Xe Cores
 
32
 
32
 
28
 
24
 
8
 
6
XMX Engines
 
512
 
512
 
448
 
384
 
128
 
96
FP32 Cores
 
4096
 
4096
 
3584
 
3072
 
1024
 
768
GPU Clock
 
2100 MHz
 
2100 MHz
 
2050 MHz
 
1700 MHz
 
2000 MHz
 
2000 MHz
Memory Size
 
16GB G6
 
8GB G6
 
8GB G6
 
8GB G6
 
6GB G6
 
4GB G6
Memory Bus
 
256-bit
 
256-bit
 
256-bit
 
256-bit
 
96-bit
 
64-bit
Memory Clock
 
17.5 Gbps
 
16.0 Gbps
 
16.0 Gbps
 
16.0 Gbps
 
15.5 Gbps
 
15.5 Gbps
Bandwidth
 
560 GB/s
 
512 GB/s
 
512 GB/s
 
512 GB/s
 
186 GB/s
 
124 GB/s
TBP
 
225W
 
225W
 
225W
 
175W
 
75W
 
75W
MSRPstarting at $349starting at $329starting at $289TBC$139TBC
Launch DateOctober 12October 12October 12AnnouncedJuneAnnounced

Source: Github




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