DirectX 10.1

[piyush809]

directX 10.1 for pc games

 

[jaguarskx]

DX10.1 has been abandoned.

It was poorly implemented and while it did provide some additional eye candy, the drop in performance was pretty big.

Now it's basically DX9 or DX11.

 

[kxracer]

A game that will be coming out soon allows for DX 10.1 and DX 11 only.

Are you saying my 4870 512 mb will struggle big time because DX 10.1 was poorly implemented compared to DX 11? If it will struggle big time, would a 7770 then be a good upgrade for that game because it can use DX11 vs "poorly implemented" DX 10.1?

 

[jaguarskx]

I can't tell you if the HD 4870's performance will be adequate enough for you. The best thing to do is to just play the game with it and if you want better performance, then go out an buy a new video card.

The Radeon HD 7xxx series architecture is a big improvement over the HD 4870. The HD 4870 only supports up to DX10.1 while the Radeon HD 7770 has 3rd generation DX11 circuitry which should also mean it can handle DX10.1 better than your older card.

 

[kxracer]

Let's speak hypothetically here. Say if you got for example a 7770 card. And you force DX 11 one time and the other time force DX 10.1. Will you get better framerate from DX11 vs DX 10.1?

 

[jaguarskx]

I would say DX10.1 mode will give you better performance.

One of the biggest/best features of DX11 is Tessellation which can make graphics look more impressive, but at the same time it reduces performance. In it's most basic form Tessellation increases the actual number of polygons used to render an object (as long as the graphics have been designed to take advantage of tessellation). For example, it is possible for Tessellation to increase the number of polygons used to render a monster from 6,000 polygons to 9,000 polygons. The result is basically more details and much better looking textures. This is done on the fly by the graphics card so it has a substantial impact on performance.

The performance impact is likely to be greater than whatever effects are used in DX10.1 mode (for this particular hypothetical example), so but at the same time the graphics are much more superior than when comparing DX9 and DX10.1 effects.

 

[Sunius]

If you don't increase eye candy just change rendering API to DirectX 11, it will most certainly perform much better than DirectX 10.1.

 

[johanpeeters83]

A game that will be coming out soon allows for DX 10.1 and DX 11 only.

Are you saying my 4870 512 mb will struggle big time because DX 10.1 was poorly implemented compared to DX 11? If it will struggle big time, would a 7770 then be a good upgrade for that game because it can use DX11 vs "poorly implemented" DX 10.1?

first of all with cuda you can choose opengl instead of d3d features
simply download nvinspector
aldo this is for nvidia
you need to set up a profile for that application and add the game.exe for that specific rendering feature

a 7770 is a downgrade if you do apple for apple comparison

Radeon HD 4870 1GB vs Radeon HD 7770

Intro

The Radeon HD 4870 1GB has a GPU core clock speed of 750 MHz, and the 1024 MB of GDDR5 memory is set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.
Compare those specifications to the Radeon HD 7770, which makes use of a 28 nm design. ATi has set the core frequency at 1000 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this particular card. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 70 Watts (88%)
Memory Bandwidth

In theory, the Radeon HD 4870 1GB will be 60% quicker than the Radeon HD 7770 overall, because of its greater data rate. (explain)

Radeon HD 4870 1GB 115200 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 43200 (60%)
Texel Rate

The Radeon HD 7770 will be a lot (approximately 33%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)
Radeon HD 7770 40000 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 10000 (33%)
Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7770 is a better choice, by far. (explain)
Radeon HD 7770 16000 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 4000 (33%)

Radeon HD 4870 512MB vs Radeon HD 7770

Intro

The Radeon HD 4870 512MB comes with a GPU clock speed of 750 MHz, and the 512 MB of GDDR5 memory is set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.
Compare all that to the Radeon HD 7770, which comes with GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 70 Watts (88%)
Memory Bandwidth

In theory, the Radeon HD 4870 512MB should be much faster than the Radeon HD 7770 in general. (explain)

Radeon HD 4870 512MB 115200 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 43200 (60%)
Texel Rate

The Radeon HD 7770 will be much (about 33%) faster with regards to anisotropic filtering than the Radeon HD 4870 512MB. (explain)
Radeon HD 7770 40000 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 10000 (33%)
Pixel Rate

The Radeon HD 7770 is a lot (about 33%) better at AA than the Radeon HD 4870 512MB, and should be able to handle higher resolutions while still performing well. (explain)
Radeon HD 7770 16000 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 4000 (33%)