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# AMD Radeon RX 5700 and 5700 XT review

In this review, we look at the two new graphics cards released by AMD, the Radeon 5700 and 5700 XT. Both cards are based on the new NAVI GPU, fabricated at a 7nm node and capable of battling with NVIDIA's GeForce RTX 2060 and 2070. Join us in an in-depth review of these new 8GB GDDR6 based graphics cards.

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**AMD Radeon RX 5700 and 5700 XT review**· Gigabyte Aorus KD25F 240 Hz Monitor review »pages « < 12 13 14 15 > »

**yasamoka**

Senior Member

Posts: 4816

**Posted on: 07/07/2019 09:50 PM**

Again, you may be going above my head, but i feel like you're just talking about what it means to double a number, rather then double the space it takes. Since we're talking about GPUs, and the cost associated with it, and we were talking about doubling the GPU, for example, having an RX 5800 with 5120, which would take up to twice the space (in a perfect world), would not double the area size of a GPU. Again, i could be wrong in that, and if i'm wrong, i feel i will likely never understand the reasoning for that at all, as the idea that you can put twice as much, lets just say...sand, into a sandbox, and quadruple its size, doesn't make a bit of sense.

But to me, it sounds like you're replying to me without actually knowing what we are actually discussing, which if that's the case, i don't really know why you replied. If it's not, then i simply do not understand the point you are trying to make, but i feel i likely won't get it ever, so it's likely moot point lol

What's so difficult?

I'm not participating in the discussion related to features and die size.

I'm only pointing out that you wrongly refer to the value "y" of an area that is literally double another value "x" of another area and then claim that y = 2x implies that the area is quadrupled, which it is not. The values x and y themselves refer to an area (which is the two-dimensional quantity) you are instead quadrupling, while the analogies you give that you think are the same case are examples of one-dimensional quantities (length, diagonal) that, of course, when doubled, quadruple the area. But the scenarios you're discussing are apples and oranges.

This is where your misunderstanding of doubling the features in a GPU quadruples the die size stems from. The area isn't getting quadrupled, it's getting doubled, but you're taking that doubled quantity and assuming it refers to one dimension, then quadrupling the area in return.

Draw it out on a piece of paper. Draw a 1cm x 1cm square. The area is 1cm^2. Now double the *area* by multiplying each dimension by sqrt(2), meaning you now have a 1.41cm x 1.41cm square whose area is now *double* at 2cm^2.

What you think is doubling is each dimension. They are not. The area itself is doubling. Each dimension is increasing by 41% only.

**Evildead666**

Senior Member

Posts: 1287

**Posted on: 07/07/2019 10:05 PM**

What's so difficult?

I'm not participating in the discussion related to features and die size.

I'm only pointing out that you wrongly refer to the value "y" of an area that is literally double another value "x" of another area and then claim that y = 2x implies that the area is quadrupled, which it is not. The values x and y themselves refer to an area (which is the two-dimensional quantity) you are instead quadrupling, while the analogies you give that you think are the same case are examples of one-dimensional quantities (length, diagonal) that, of course, when doubled, quadruple the area. But the scenarios you're discussing are apples and oranges.

This is where your misunderstanding of doubling the features in a GPU quadruples the die size stems from. The area isn't getting quadrupled, it's getting doubled, but you're taking that doubled quantity and assuming it refers to one dimension, then quadrupling the area in return.

Draw it out on a piece of paper. Draw a 1cm x 1cm square. The area is 1cm^2. Now double the *area* by multiplying each dimension by sqrt(2), meaning you now have a 1.41cm x 1.41cm square whose area is now *double* at 2cm^2.

What you think is doubling is each dimension. They are not. The area itself is doubling. Each dimension is increasing by 41% only.

I'm pretty sure he cocked up when he spoke about the size being quadrupled.

Double the transistors is going to be double the area.

I think he got caught up in the doubling of the diagonal, which quadruples the area.

On another note, these cards are amazing, considering they are Vega64 level, and much , much cheaper and power efficient.

Competition is always good

**SpajdrEX**

AMD Vanguard

Posts: 2327

**Posted on: 07/07/2019 10:11 PM**

RX5700 costs are nearly the same as Vega 64 in my country. (12$ diff,erence) Except that Vega 64 is Nitro+ edition and not reference. As usual, they rather stop selling Vega 64 then bring the price down.

**metagamer**

Senior Member

Posts: 1660

**Posted on: 07/07/2019 10:16 PM**

Surprisingly good. Well done AMD!

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Aura89Senior Member

Posts: 7875

Posted on: 07/07/2019 09:16 PM32" is a one-dimensional quantity representing the diagonal. Doubling the diagonal at the same aspect ratio implies doubling both width and height, quadrupling area.

1080p is a one-dimensional quantity representing the number of pixel scanlines. Doubling the number of scanlines at the same aspect ratio implies also doubling the width, or the length of each scanline, quadrupling the pixel count.

Twice the size, or in other words, twice the area, when you're already referring to a two-dimensional quantity (mm^2), is double that quantity. In that case, doubling the quantity really does double the area, while in the former examples, doubling the diagonal or scanline count quadruples the corresponding two-dimensional quantity (area, resolution respectively).

I'm only referring to the mathematical aspect of these numbers, not to how they map to the problem of making chips at specific die sizes.

Again, you may be going above my head, but i feel like you're just talking about what it means to double a number, rather then double the space it takes. Since we're talking about GPUs, and the cost associated with it, and we were talking about doubling the GPU, for example, having an RX 5800 with 5120, which would take up to twice the space (in a perfect world), would not double the area size of a GPU. Again, i could be wrong in that, and if i'm wrong, i feel i will likely never understand the reasoning for that at all, as the idea that you can put twice as much, lets just say...sand, into a sandbox, and quadruple its size, doesn't make a bit of sense.

But to me, it sounds like you're replying to me without actually knowing what we are actually discussing, which if that's the case, i don't really know why you replied. If it's not, then i simply do not understand the point you are trying to make, but i feel i likely won't get it ever, so it's likely moot point lol