The RTX 3080 Ti only has 12GB of video memory, which is half of the RTX 3090. In fact, 20GB of video memory was also tried, but unfortunately it was stillborn. The packaging box was ready but not released.The reason may be that in order to add video memory, the bit width had to be cut from 384-bit to 320-bit, but a lot of bandwidth was lost, and the gain outweighed the gain.

Some netizens found an engineering sample of RTX 3080 Ti 20GB, which is also an FE public version. Let’s take a look at the disassembly and testing.

On the front of the box, there is no clear label 3080 Ti 20GB.

However, the PCB number of PG133B is slightly different from that of 3080 Ti 12GB, with an extra B.

Standard public version shape, nothing to say.

There are up to 20 video memory bits, half of the front and half of the back, and each 1GB chip makes up a total of 20GB. Note that there are four empty solder positions.

Obviously, this is modified from the 3090. The 3080 Ti 12GB only has 12 bits of video memory.

GPU core numberGA102-250, also different from other models.

It had been left for too long, and the silicone grease and cooling pad had aged, so they were replaced with new ones for testing.

You need to modify the driver and apply a patch to start and run correctly.

The default core frequency is about 1980MHz, the memory frequency is 19GHz, the maximum voltage is 1.081V, the power consumption limit is 350W, and the core temperature is 56℃ when the fan is at full speed.

The measured 3DMark Speed ​​Way score is 5042 points, the Steel Nomad score is 4863 points, and the Port Royal score is 13105 points, which are much lower than the 3080 Ti, but almost the same as the 3080. After all, the latter is 320-bit wide.

Worse,Heavy computing loads and rendering tests, which are most suitable for large graphics memory, will crash in a few seconds and cannot be tested.

But surprisingly, it can also be overclocked, and the power consumption can be unlocked to nearly 400W, an increase of about 14%.The core frequency can exceed 150MHz, the memory frequency can exceed 1940MHz.

Tested again with 3DMark Speed ​​Way 5403 points, Steel Nomad 5155 points, and Port Royal 13947 points.About 6-7% higher.